Care Home Safeguarding: Staff Identity Verification
A care home applicant submitted a DBS application, provided references, and passed the standard pre-employment checks. He had done this before — under a slightly different name, with a slightly different date of birth, at a care home from which he had been dismissed for reasons that should have barred him from the sector. P300 EEG identified the concealed identity. This case study documents how — including the waveform data that made it visible.
Important Privacy & Sensitivity Notice
Anonymisation: All names, care home identifiers, and identifying details have been fully anonymised. The applicant's false and real identities have both been anonymised. No information is included that could identify the individuals or the organisation.
EEG data: Waveform graphs are drawn from anonymised session data consistent with this investigation's findings.
Consent: The applicant provided written consent to the P300 EEG identity verification as part of the care home's disclosed pre-employment process. Participation in P300 EEG screening was a stated condition of the enhanced recruitment process he had agreed to.
Legal note: Care providers considering implementing P300 EEG screening should seek independent legal advice regarding UK GDPR compliance and proportionality before doing so. We can provide a framework consultation.
Background
A residential care home for elderly adults in the North of England had been strengthening its safeguarding processes following sector-wide guidance on safer recruitment. The home's manager had attended a DBS awareness training session in late 2025 at which a speaker had described the specific blind spot in standard enhanced DBS checks: they verify criminal history under the name submitted, but they cannot detect whether the name submitted is the applicant's real name.
The manager had subsequently introduced P300 EEG identity verification as a discretionary element of her enhanced pre-employment process — disclosed to all applicants at the point of offer, with participation a condition of appointment to roles involving direct resident contact.
In February 2026 a care assistant applicant — using the name "Daniel Ward" (anonymised) — was offered a conditional position subject to the enhanced checks. His enhanced DBS came back clear. His two references were broadly positive. His stated employment history was consistent with his CV. He consented to the P300 EEG identity verification session.
Why standard checks have a specific identity blind spot
What standard DBS checks do well
- Verify criminal records under the name and DOB submitted
- Check against the Children's and Adults' Barred Lists under submitted identity
- Cross-reference against known aliases if they have been formally linked
- Identify convictions across England, Wales, Scotland, and Northern Ireland
- Cannot detect a submitted identity that differs from the applicant's real name
- Cannot detect a previous barring registered under a different name variant
- Cannot detect deliberate minor modifications to name or date of birth
- Reference checks verify the person presenting, not their history under other identities
What P300 EEG identity verification adds
- Tests whether the applicant's brain recognises details of a different identity
- Identifies neurological familiarity with previous names, addresses, and employment history
- Cannot be defeated by submitting a false name — the brain recognises what it knows
- Detects concealed prior employment, including dismissed positions
- Documents the finding independently of the applicant's account
- Provides evidential basis for referral to the DBS and local safeguarding teams
The P300 Data: Identity Concealment in the Waveform
Identity verification P300 EEG works on the same neurological principle as deception detection — but the probe stimuli are built around identity-specific details rather than event-specific ones. If an applicant is using a false or altered identity, their brain holds neurological memory of their real identity. When probe stimuli containing specific details of their actual name, previous addresses, or employment history appear on screen, the brain produces a P300 recognition response — because those details match what is stored in memory, even though the applicant has not disclosed them.
Event-Related Potential (ERP) — Pz Electrode · "Daniel Ward" Identity Verification Session
Probe stimuli = details of the applicant's real identity (undisclosed name, previous address, previous employer) · Control stimuli = plausible but incorrect alternatives · Blue region = P300 analysis window
Probe Design: Testing Identity, Not Behaviour
Identity verification probe design begins with a preliminary consultation stage in which contextual information about the applicant — collected through the application process and standard checks — is used to construct hypotheses about possible concealed identity elements. In this case, minor inconsistencies in the application history had already been noted before the session.
Probe Set 1 — Name recognition: real vs submitted
Stimuli including the applicant's real first and surname alongside plausible alternative name combinations. A genuine applicant using their real name produces strong recognition responses to their own name across all conditions — and no differential P300 to any alternative. An applicant using a false name will produce recognition responses to their real name presented as a probe stimulus. "Daniel's" recognition response to the probe stimuli containing his real name produced a probability score of 97%.
Probe Set 2 — Previous address and employment history
Stimuli including specific addresses and previous employer names drawn from public records associated with the real identity. A genuine applicant has no reason to recognise addresses or employers they have never been associated with. "Daniel" produced significant recognition responses to a previous address and the name of the care home from which he had previously been dismissed — a name that did not appear anywhere in his submitted CV or application.
Probe Set 3 — Specific disqualifying incident knowledge
Stimuli built around specific details of the incident that had led to his removal from the previous care home and subsequent DBS barring — details known only to individuals who had been involved in that incident. "Daniel" produced clear recognition responses to these specific details, confirming neurological familiarity with an event he had not disclosed and could not have known about if he were who he claimed to be.
Results
What the investigation subsequently confirmed
- The real identity identified through the P300 findings matched a barred individual on the DBS Adults' Barred List — registered under his real name
- He had been dismissed from a previous care home following a safeguarding incident involving a resident, and the investigation had resulted in DBS barring under his real name
- The name variant he had submitted to this care home differed from his real name by a single character — sufficient to return a clear enhanced DBS result under the submitted identity
- His two reference providers were contacted. One had provided a reference under the false name without knowledge of the real identity. The other could not be verified.
- The applicant admitted the identity discrepancy after being informed of the P300 findings
Key Investigation Findings
- All three probe sets returned identity concealment indicated — with the strongest result on Probe Set 1 (real name recognition, 97%), producing the highest single probability score across all our identity verification case dataset entries.
- Probe Set 2 (previous employer recognition, 94%) identified neurological familiarity with a care home not listed anywhere in the applicant's submitted CV or application — the care home from which he had been dismissed following the barring incident.
- Probe Set 3 (incident knowledge, 92%) confirmed familiarity with specific details of the disqualifying incident — knowledge that could only be held by someone who had been involved in it.
- Standard enhanced DBS had returned clear under the submitted identity. Reference checks had returned broadly positive. Neither had any mechanism for detecting the identity concealment. P300 EEG specifically addresses the neurological component that these documentary checks cannot reach.
- The applicant was not appointed. The matter was referred to the Disclosure and Barring Service, the local authority safeguarding team, and the Care Quality Commission as a notifiable event. The real identity DBS barring was confirmed within 72 hours of referral.
Safeguarding Outcomes
The applicant was not appointed to the care home. He admitted the identity concealment on the day of the P300 session, before leaving the building. The care home's manager made four concurrent referrals: to the DBS, to the local authority designated officer (LADO), to the CQC as a notifiable safeguarding event, and to the previous care home to confirm the identity match.
The DBS confirmed the barring under the real identity within 72 hours. The local authority safeguarding team opened a formal investigation. At the time of publication, the matter remained under investigation by those bodies.
The care home manager described the outcome as exactly what the enhanced process had been designed to produce — and noted that a single character difference in a surname had been sufficient to produce a clear enhanced DBS result under the submitted identity. That is not a failure of the DBS system. It is a structural limitation that P300 EEG is specifically designed to address.
What This Case Demonstrates
Identity verification P300 EEG addresses the specific blind spot in DBS screening
The DBS system is robust and comprehensive under the identity submitted. It cannot verify that the identity submitted is genuine. This case demonstrates the specific mechanism by which that limitation is exploited — a single character variation in a surname — and how P300 EEG closes the gap. The brain cannot vary its recognition responses in the same way a surname can be varied on an application form.
Predatory applicants targeting care roles represent a specific safeguarding risk
Care settings have higher concentrations of vulnerable adults than almost any other work environment, and care roles provide unsupervised access to those adults in their most vulnerable states. Individuals who have been barred from care work do not simply stop seeking care work — they seek it under different names. P300 EEG identity verification is the only screening tool currently available that tests what the brain holds rather than what the application form says.
Disclosure and consent are the practical gateway to effective screening
This care home disclosed its use of P300 EEG identity verification to all applicants at the point of conditional offer, before any screening took place. This transparency is both legally necessary and practically effective — it does not deter genuine applicants who have nothing to conceal, and it does deter some individuals who might otherwise attempt to circumvent documentary checks. The applicant in this case consented to the session and attended it. His brain then provided the evidence that his documents had concealed.
Responsible for Care Home Recruitment?
P300 EEG identity verification closes the specific gap in DBS screening that name variations exploit. Initial consultation free. We can advise on implementation, legal framework, and consent processes.