Forensic Technology | NCRB 2026

CrPI — Crime & Criminal Profiling
/ Identification

A Complete Guide to India's Most Advanced Multi-Modal Biometric Criminal Identification Platform — the CrPI App, the CrPI Act 2022, and What It Means for Forensic Science

June 2026 NCRB / MHA, India Exam Relevant 12-min read

4 Biometric Modalities Integrated

1.29 Cr+ Criminal Records in NAFIS Database

75 yrs Data Retention Period (CrPI Act)

1,300+ Police Stations with NAFIS/CrPI Nodes

2022 Year CrPI Act Replaced 1920 Law

1. Introduction — Two Meanings of "CrPI"

When forensic science aspirants and policing professionals in India use the term CrPI, it refers to two distinct but deeply interlinked entities: the Criminal Procedure (Identification) Act, 2022 — the legislative backbone that legally authorises biometric data collection from criminals and suspects — and the CrPI Application, a sophisticated multi-modal biometric software platform developed by the National Crime Records Bureau (NCRB) and officially launched in June 2026. Together, these two dimensions represent the most transformative upgrade to India's criminal identification machinery since independence.

Core Purpose: To scientifically identify criminals and suspects using a unified platform that simultaneously matches fingerprints, facial features, iris patterns, and DNA profiles — replacing the century-old colonial approach of relying solely on physical fingerprints.

Understanding both dimensions — the legal framework and the technological platform — is essential not only for law enforcement professionals but also for forensic science students preparing for competitive examinations such as the UGC NET Forensic Science Paper 2 and the NFSU FACT examination.

2. Historical Background — From 1920 to 2022

India's system of criminal identification has a rich — and complex — history. The journey from colonial-era fingerprinting to today's AI-enabled multi-biometric platforms spans more than a century.

The 1897 Calcutta Fingerprint Bureau

The world's first fingerprint bureau was established in Calcutta in 1897. While credit is popularly attributed to Sir Edward Henry, the actual scientific groundwork was developed by Indian Sub-Inspectors Azizul Haque and Hemchandra Bose, who co-developed the classification system now universally known as the Henry Classification System.

The Identification of Prisoners Act, 1920

For over a century, Indian law enforcement relied on the British-era Identification of Prisoners Act, 1920. This colonial legislation had a very narrow scope — it permitted the collection and recording of only finger impressions, footprint impressions, and photographs from a limited category of convicted persons. Non-convicted persons could be measured only upon a specific order from a Magistrate.

Why the 1920 Act Became Obsolete

The 1920 Act was designed when fingerprinting was the cutting edge of forensic science. By the 21st century, forensic capabilities had advanced to include DNA analysis, iris recognition, facial recognition, CCTV analytics, digital evidence, and AI-assisted identification — none of which were contemplated by the colonial statute. In 1980, the 87th Report of the Law Commission of India recommended expanding measurements to include palm impressions and specimen signatures, but no action was taken for over four decades.

Supreme Court Impetus — State of UP v. Ram Babu Misra

The Supreme Court of India, in the landmark case of State of Uttar Pradesh v. Ram Babu Misra, highlighted the inadequacy of the 1920 Act and the pressing need for legislative amendment to align identification procedures with modern forensic science. This judicial nudge, combined with the global shift towards scientific policing, provided the foundation for a comprehensive legislative overhaul.

3. The Criminal Procedure (Identification) Act, 2022 — The Legislative Framework

The Criminal Procedure (Identification) Act, 2022 was passed by the Indian Parliament in April 2022 and came into effect with Rules notified by the Ministry of Home Affairs (MHA) on 19 September 2022. It replaced the Identification of Prisoners Act, 1920, and fundamentally expanded the state's power to collect and use biometric and biological data from persons involved in criminal proceedings.

Key Provisions at a Glance

Parameter	1920 Act (Old Law)	CrPI Act, 2022 (New Law)
Data Types Collected	Fingerprints, footprints, photographs	Fingerprints, palm prints, iris/retina scan, photographs, biological samples (blood/saliva/hair/swab), behavioural attributes (handwriting, signature), DNANEW
Persons Covered	Convicted persons sentenced to ≥1 year; non-convicted on Magistrate order	All convicts; arrested persons; those detained under any preventive detention law
Nodal Agency	State Fingerprint Bureaux	National Crime Records Bureau (NCRB)
Data Storage	Physical registers / limited digital	Centralised national digital database (NCRB), encrypted
Retention Period	Not specified clearly	75 years in digital/electronic form
Data Sharing	Limited to state bureaux	NCRB may share with any law enforcement agency nationally
Refusal Penalty	Punishable offence	Deemed offence under Section 186 IPC (imprisonment up to 3 months or ₹500 fine or both)
Data Destruction	Not clearly codified	Destroyed for acquitted/released persons unless directed otherwise by Court/Magistrate
Officer Rank for Collection	Sub-Inspector and above	Head Constable and above; Head Warder (prison)

Who Must Give Measurements?

Under the Act, the following categories of persons are required to provide their measurements (biometric and biological data):

• All convicted persons, regardless of sentence length
• Persons arrested for offences punishable with imprisonment of 7 or more years
• Persons arrested for offences against women or children (for biological samples)
• Persons detained under any preventive detention law

Data Destruction Safeguard

Records must be destroyed for persons who: (i) have not been previously convicted, and (ii) are released without trial, or are discharged or acquitted by the court — unless a Magistrate or Court directs otherwise with recorded reasons. The NCRB will follow the SOPs for the procedure.

Delhi and Rajasthan — Pioneers of CrPI Act Implementation

In March 2025, Delhi and Rajasthan became the first Indian states to begin implementation of the CrPI Act, initiating the collection of biometric data — including fingerprints, iris, and retina scans — from arrestees, even without formal arrest in some cases, leveraging Section 35(3) of the Bharatiya Nagarik Suraksha Sanhita (BNSS), 2023, which allows biometric collection through investigative notices.

As of June 2026, over one lakh (1,00,000+) DNA profiles have been stored in the NCRB database, marking a significant operational milestone even as full nationwide implementation continues.

4. The CrPI Application — India's Multi-Modal Biometric Platform

The CrPI (Crime & Criminal Profiling / Identification) Application is a digital platform developed by the National Crime Records Bureau (NCRB) under the Ministry of Home Affairs. It was officially launched by Union Home Minister Shri Amit Shah at the 26th All India Fingerprint Conference, 2026, held on 19–20 June 2026 at the Sardar Vallabhbhai Patel Auditorium, NCRB Headquarters, New Delhi.

Launch Statement (HM Amit Shah, X/Twitter): "At the 26th All India Fingerprint Conference-2026, launched 4 groundbreaking applications — NCRB-Abhigyan, CrPI, E-Forensics 2.0 and E-Prosecution 2.0. They equip our agencies with the key to speed and accuracy in justice delivery by enabling instant matching of fingerprints, integrated DNA, iris and face matching and seamless digital coordination among agencies."

The Four Biometric Modalities of CrPI

What makes CrPI unique is its multi-modal biometric integration — it does not rely on a single identification marker but synthesises four independent, scientifically validated modalities into a unified identification pipeline:

Fingerprint Matching

Dactyloscopic comparison via NAFIS-integrated database with 1.29 crore+ criminal records. Assigns unique 10-digit NFN to each criminal.

Facial Recognition

AI-driven facial mapping from CCTV footage, digital images, mug shots, and surveillance data. Disguise-resistant photo identification.

Iris Matching

High-accuracy iris pattern recognition from iris scans collected under CrPI Act provisions at police stations and prisons.

DNA Profiling

Matching of DNA samples (blood, saliva, hair) with NCRB's national DNA database — over 1 lakh profiles and growing.

Use Cases — What CrPI Enables Investigators to Do

The CrPI platform is designed to support investigations involving CCTV footage, digital images, and biological evidence from crime scenes. Specific operational use cases include:

• Identification of unknown suspects from partial or incomplete biometric evidence
• Rapid cross-state tracing of habitual offenders and recidivists
• Linking a suspect to multiple crimes across different jurisdictions using the same biometric profile
• Verifying identity in cases of disguised, disfigured, or post-mortem subjects using multi-modal fallback
• Processing biological evidence (blood, hair, saliva) recovered from heinous crime scenes against the national DNA database
• CCTV video analytics for facial identification in public space surveillance

5. CrPI Within the NCRB Digital Ecosystem — The Four Apps of 2026

CrPI is not a standalone application — it is one pillar of a comprehensive four-platform digital justice ecosystem launched simultaneously by NCRB in June 2026. Understanding how these four platforms interconnect is critical for exam preparation and for grasping India's digital criminal justice vision.

Application	Full Form / Purpose	Target Users	Key Feature
NCRB-Abhigyan	Mobile field app for real-time NAFIS fingerprint search (Sanskrit: "Recognition")	Field Police Officers	Fingerprint ID in 35 seconds; 1.29 Cr+ records; 2FA secured
CrPI	Crime & Criminal Profiling / Identification — multi-modal biometrics	Investigators, FSL, Intelligence	4-modality integration: Fingerprint + Face + Iris + DNA
e-Forensics 2.0	Digital platform connecting FSLs ↔ Investigating Agencies	FSL Scientists, Investigating Officers	Seamless forensic report exchange; chain-of-custody tracking; inter-state FSL coordination
e-Prosecution 2.0	Digital coordination: Police ↔ Prosecution ↔ Judiciary	Police, Prosecutors, Courts	End-to-end case management from chargesheet to court verdict

Home Minister Shah's Vision: India has built a formidable digital criminal justice infrastructure, but the data spread across NAFIS, CCTNS, e-Courts, e-Prisons, and e-Forensics remains like "a cupboard stored in a room" unless analysed through AI to generate actionable intelligence. The four new apps are designed to unlock that potential.

CrPI's Integration with NAFIS

CrPI is deeply integrated with the National Automated Fingerprint Identification System (NAFIS) — India's pan-India web-based searchable database of crime and criminal fingerprints, managed by the Central Fingerprint Bureau (CFPB) at NCRB. NAFIS assigns a unique National Fingerprint Number (NFN) — a 10-digit identifier (first two digits = state code) — to every suspect arrested by police. This NFN is linked to all FIRs associated with that person, creating a lifetime criminal identification record. CrPI uses this NAFIS fingerprint database as one of its four biometric layers.

The broader digital infrastructure also includes CCTNS (Crime and Criminal Tracking Network & Systems), which now covers 100% of India's 17,840 police stations with 37.68 crore FIRs on the platform.

6. Criminal Profiling — The Behavioural Science Dimension

The "Profiling" in CrPI encompasses not just biometric identification but also the broader science of criminal profiling (offender profiling) — a behavioural and investigative tool used to create psychological, behavioural, and demographic profiles of likely offenders. Understanding this dimension gives depth to what CrPI aims to achieve.

The Criminal Profiling Process — Six Stages

• Stage 1 — Data Assimilation All available information is gathered: crime scene photos, forensic reports, witness statements, victimology, CCTV footage, digital evidence, and prior criminal records.
• Stage 2 — Crime Scene Classification Based on gathered data, the crime is classified as organised (premeditated, methodical, deliberate) or disorganised (impulsive, chaotic, opportunistic). This classification significantly shapes the offender profile.
• Stage 3 — Crime Scene Reconstruction Forensic investigators reconstruct the sequence of events — how the offender entered, what tools were used, how the crime was executed, and how the offender departed. This reveals behavioural intent.
• Stage 4 — Profile Generation A tentative profile is built covering demographics (age, sex, occupation, education, geography), psychological traits (narcissism, psychopathy, anger management issues), and MO patterns.
• Stage 5 — Investigative Application The profile narrows the suspect pool and guides investigation strategy — surveillance targets, interview approaches, geographic focus areas.
• Stage 6 — Profile Validation / Update As new evidence emerges, the profile is validated against suspects or updated to reflect evolving information. CrPI's biometric database is a key validation tool at this stage.

Organised vs. Disorganised Crime Scenes

Parameter	Organised Crime Scene	Disorganised Crime Scene
Planning	Premeditated, deliberate	Impulsive, opportunistic
Evidence Left	Minimal (tools brought & removed)	Abundant (chaotic)
Offender Profile	Socially competent, stable employment, above-average intelligence	Socially inadequate, unemployed, possible mental illness
Victim Selection	Targeted, specific victim type	Random or proximate
Post-crime Behaviour	Follows investigation, may leave area	Often remains near crime scene

Criminal Profiling in India — Current Status

While India's legal and investigative systems have traditionally relied heavily on physical evidence, witness testimony, and confessions, the complexity of modern criminal activities — organised crime networks, serial offenders, cyber-enabled crimes — has created a pressing need for behavioural profiling. The FBI's Behavioural Science Unit (BSU) pioneered systematic profiling in the US; India's CrPI system represents the country's analogous push towards evidence-based, data-driven criminal science.

Key challenges to profiling in India include: shortage of specialists trained in forensic psychology and criminology; inadequate databases of criminal behavioural patterns; and the difficulty of applying Western profiling models to India's diverse cultural and social contexts.

7. Constitutional Debates & Privacy Concerns

The CrPI Act 2022 has been the subject of significant constitutional scrutiny and civil liberties debate. Below are the key contested dimensions:

Key Constitutional Concerns

• Right to Privacy (Article 21): The K.S. Puttaswamy v. Union of India (2017) judgment established privacy as a fundamental right. Mass collection of biometrics from even acquitted persons challenges this standard.
• Right Against Self-Incrimination (Article 20(3)): Collection of "behavioural attributes" and biological samples without adequate safeguards may compel accused persons to produce evidence against themselves.
• 75-Year Data Retention: Even persons acquitted after all appeals may have their data retained if a Magistrate so directs — raising "Right to be Forgotten" concerns.
• Preventive Detainees: The Act initially covered persons under preventive detention laws, including political protesters — later partially addressed in Rules.
• Principle of Purpose Limitation: NCRB is permitted to share data with "any law enforcement agency" without restricting use to the original purpose of collection.
• Writ Petition Pending: A writ petition challenging the constitutionality of the CrPI Act has been filed before the Delhi High Court, which has issued notice to the Central Government.

Government's Position

The Central Government maintains that privacy and data protection concerns are addressed through the Rules notified under the legislation and through model Prison Manuals available to States. The government also notes that the Act strengthens conviction rates, enables cross-state tracking of habitual offenders, and aligns India with global forensic standards — outcomes that serve the larger public interest in a proportionate manner.

8. Infrastructure — What Powers CrPI

The CrPI platform and the broader CrPI Act implementation rely on a substantial and growing forensic infrastructure across India:

Infrastructure Component	Status (as of 2026)
NAFIS Fingerprint Records	1.29 crore+ criminal fingerprint records
NAFIS/CrPI Workstations	Operational at 1,300+ police stations with scanners
DNA Profiles in NCRB Database	1,00,000+ (over one lakh) as of June 2026
Biometric Collection Units	2,600+ collection units established nationwide
CCTNS Coverage	100% — all 17,840 police stations; 37.68 crore FIRs
DNA & Face Matching Rollout	Planned for 1,300 police stations (ongoing)
Iris Scanner Deployment	Ongoing — not yet universally deployed at police station level
Secure Network for NCRB Data Sharing	Authorised users access via encrypted leased line network

Ground Reality Challenge

While the legal and technical architecture of CrPI is now in place, several police officials have noted that iris scanners and full DNA/facial-recognition systems are yet to be universally provided at the police station level. Police in smaller states have also faced connectivity issues in establishing the required secured internet leased lines for NCRB database access. These implementation gaps remain the primary challenge to making CrPI fully operational nationwide.

9. Significance — Why CrPI Matters for India's Criminal Justice System

The introduction of CrPI — both as an Act and as a technology platform — marks a paradigm shift in how India approaches criminal identification and investigation:

• From Physical to Digital Replaces paper-based, state-siloed fingerprint bureaux with a centralised, national digital database accessible in real time.
• From Single-Modal to Multi-Modal No longer limited to fingerprints — the four-modality approach dramatically reduces misidentification and enables identification even when one modality is compromised (e.g., fingerprint burns).
• From Reactive to Predictive The profiling dimension allows law enforcement to anticipate criminal behaviour, predict crime hotspots, and prevent repeat offending.
• Interstate Crime Tracking Habitual offenders who previously evaded detection by committing crimes across state lines can now be identified and linked through the centralised NCRB biometric database.
• Faster Justice Delivery The government's target — completing the full journey from FIR to conviction within three years — is supported by the CrPI + e-Forensics 2.0 + e-Prosecution 2.0 digital chain.
• Scientific Evidence, Not Just Testimony Shifts the Indian criminal justice system decisively from confession and witness-testimony-dependent prosecution towards scientific, biometric evidence.

  Exam Relevance — UGC NET & NFSU FACT

• CrPI integrates exactly 4 biometric modalities: fingerprint + face + iris + DNA — a likely direct MCQ
• CrPI App was launched at the 26th All India Fingerprint Conference, 19–20 June 2026, NCRB, New Delhi — event details are MCQ-worthy
• All four NCRB apps (Abhigyan, CrPI, e-Forensics 2.0, e-Prosecution 2.0) were launched at a single event — a common exam trap question
• The CrPI Act 2022 replaced the Identification of Prisoners Act, 1920 — know the contrast table
• Data retention under CrPI Act = 75 years
• NAFIS assigns a 10-digit National Fingerprint Number (NFN) — first 2 digits = state code
• Refusal to give measurements = offence under Section 186 IPC
• NCRB established in 1986, under Ministry of Home Affairs, headquartered in New Delhi
• World's first Fingerprint Bureau: Calcutta, 1897 | Real founders: Azizul Haque & Hemchandra Bose
• Over 1 lakh DNA profiles stored in NCRB database as of 2026
• Delhi & Rajasthan = first states to implement CrPI Act (March 2025)
• CrPI Act concerns: Art. 21 privacy, Art. 20(3) self-incrimination, K.S. Puttaswamy 2017 judgment

10. Complete Timeline — CrPI Legislative & Technological Journey

• 1897 — World's first Fingerprint Bureau established in Calcutta; Azizul Haque & Hemchandra Bose co-develop the Henry Classification System
• 1920 — British-era Identification of Prisoners Act enacted; allows fingerprints, footprints, photographs only
• 1980 — 87th Report, Law Commission of India recommends expanding measurements; recommendations remain unimplemented for 40+ years
• 1986 — National Crime Records Bureau (NCRB) established under Ministry of Home Affairs
• 2017 — K.S. Puttaswamy v. Union of India: Supreme Court declares privacy a fundamental right under Article 21
• August 2022 — National Automated Fingerprint Identification System (NAFIS) launched by NCRB; 10-digit NFN assigned to criminals
• April 2022 — Criminal Procedure (Identification) Act, 2022 passed by Parliament
• September 2022 — CrPI Act Rules notified by Ministry of Home Affairs
• March 2025 — Delhi and Rajasthan become first states to implement CrPI Act biometric data collection
• June 19–20, 2026 — 26th All India Fingerprint Conference 2026; HM Amit Shah launches CrPI App, NCRB-Abhigyan, e-Forensics 2.0, e-Prosecution 2.0
• June 2026 — NCRB announces 1 lakh+ DNA profiles stored; 1.29 crore+ fingerprint records in NAFIS

  Sources & References

1. Amit Shah on X (Twitter) — Official launch statement, 26th AIFC 2026: x.com/AmitShah
2. The420.in — NCRB Digital Criminal Justice Platforms: the420.in
3. NewsX — From Fingerprints to Convictions: newsx.com
4. GS Times IAS-PCS — Union Home Minister Launches NCRB-Abhigyan App: gstimes.in
5. Ekam IAS — Daily Current Affairs 23 June 2026 (CrPI Act DNA profiles): ekamiasacademy.com
6. PRS India — Criminal Procedure (Identification) Rules, 2022: prsindia.org
7. PRS India — The Criminal Procedure (Identification) Bill, 2022: prsindia.org
8. Vajiram & Ravi — CrPI: Challenges in Implementation and Way Ahead: vajiramandravi.com
9. Drishti IAS — Criminal Procedure (Identification) Act, 2022: drishtiias.com
10. LiveLaw — CrPI Act: A Constitutional Critique: livelaw.in
11. Mondaq India — CrPI Act and Privacy: mondaq.com
12. Believers IAS — Biometric Data Collection Under CrPI Act: believersias.com
13. LawBhoomi — Criminal Profiling in India: lawbhoomi.com
14. Officers Pulse — CrPI Act 2022 Implementation: officerspulse.com
15. Budding Forensic Expert — 26th All India Fingerprint Conference 2026: buddingforensicexpert.in