More than a fingerprint: biometrics and privacy in education

Used well, it can simplify everyday routines and reduce administration for staff and students. But because biometric information is so closely connected to an individual, schools, colleges and universities need to think carefully about how it is collected, used and protected.

For education leaders, the question is how to realise the practical benefits while maintaining the confidence of pupils, parents and staff.

What counts as biometric data?

Biometric data is information derived from someone’s physical or behavioural characteristics, such as fingerprints, facial features, iris patterns, voice or typing behaviour. Where it is processed to uniquely identify a person, it is special category data under UK GDPR and receives additional protection.

Unlike a password or access card, a person’s biometric characteristics cannot simply be replaced if compromised. That makes proportionate use, strong security and clear governance especially important.

Where might schools use biometrics?

Possible uses include cashless catering, library services, attendance systems, access to buildings or specialist facilities, printing, examinations and staff access management. The benefits can be tangible: shorter queues, fewer lost cards and smoother processes for busy teams.

However, a convenient system still needs to be appropriate for the people whose data it uses. Leaders should be clear about the problem they are trying to solve and whether a less intrusive approach could deliver a similar outcome.

Understanding the legal requirements

When biometric data is used to uniquely identify individuals, organisations need both a lawful basis under Article 6 of UK GDPR and a separate condition under Article 9 for processing special category data. The appropriate justification depends on the purpose, the institution and the circumstances. It should be assessed for each proposed use rather than assumed from the technology itself.

Consider three examples:

Cashless catering in a school. A school considering fingerprint-based meal payments needs to

assess its Article 6 basis and Article 9 condition, which may include explicit consent where valid. In England, schools must also meet the relevant requirements of the Protection of Freedoms Act 2012 for under-18s, including parental notification and consent arrangements, pupils’ right to object and an alternative way to access the service.

Access to a university research facility. Facial recognition may offer an additional layer of security, but the university must still establish an appropriate Article 6 basis, such as public task or legitimate interests where applicable, and a valid Article 9 condition. The necessity and proportionality of the system are central to that assessment.

Staff attendance monitoring. Fingerprint time-recording systems raise particular questions about proportionality and employee choice. Consent may not be freely given where there is an imbalance of power, so institutions should carefully examine whether a lawful basis and special category condition can be met before proceeding.

These examples illustrate why there is no universal legal answer. The same type of technology can carry different responsibilities depending on how it is used.

Start with the purpose, then assess the risks

Before introducing a biometric system, leaders should ask what it will improve for the school community. Is the aim to make lunchtime service quicker, improve access security or reduce administrative workload? Could cards, PINs or other processes meet that need with less impact on privacy?

Schools should assess necessity and proportionality, and consider the need for a Data Protection Impact Assessment (DPIA). Where processing is likely to result in a high risk to individuals, a DPIA is required. Bringing data protection specialists into the planning stage helps teams identify risks, assess alternatives and make informed decisions before contracts and systems are put in place.

Building confidence through good governance

A responsible implementation depends on more than selecting a secure supplier. Schools and trusts should be able to explain what data is collected, why it is needed, who can access it, how long it will be retained and how it will be deleted. They should also consider accuracy, fairness, accessibility and meaningful alternatives for individuals where required.

Clear communication matters. Parents, pupils and staff need accessible information about the system and their rights. A transparent approach can help maintain trust and reduce confusion when new technology is introduced.

For multi-academy trusts, consistent governance across schools can provide additional reassurance. Shared expectations for assessing suppliers, documenting decisions and reviewing data protection risks help leaders maintain oversight while allowing individual schools to meet their operational needs.

Making informed decisions about what comes next

Biometrics can offer genuine benefits to education, particularly where it makes daily processes easier and improves the experience of students and staff. Those benefits are strongest when decisions are based on a clear need, supported by appropriate safeguards and reviewed as circumstances change.

Across TLG, we believe schools should be able to adopt useful technology with confidence. GDPR Sentry supports that goal through specialist data protection advice, compliance software and outsourced Data Protection Officer services, helping education leaders understand their responsibilities and make informed decisions.

For advice on biometric data, GDPR compliance or DPO support, contact Sentry at info@gdprsentry.com.