Biometric capacity

Biometric-Capacity Calculator

A fingerprint or face reader only holds so many enrolments. Enter your people, how many fingers each enrols, and the device's template capacity to see the total templates, how many readers or controllers you need to hold them all, the utilisation and the spare slots. Planning figures; runs in your browser.

Number of userseveryone who needs to be enrolledTemplates per userenrol 2+ fingers per person so a cut or wet finger still works

Device template capacityon the reader / controller datasheet

Matching mode

finger only — the reader searches every enrolled template

Total templates to store

Devices needed

Utilisation

Spare slots / device

A single 3,000-template device

Holds everyone

2,600 slots to spare for new joiners

In 1:N mode the reader searches every enrolled template on each scan, so matching slows and false-accepts rise as the enrolment count grows. For large populations prefer 1:1 (card or PIN, then finger) or split people across readers and zones.

Planning estimate only — quoted capacity and matching speed vary by device and template size. Biometric data is sensitive personal data under the DPDP Act 2023: store templates not finger or face images, keep them local and encrypted, delete on exit, and confirm the real limits against the product datasheet.

Plan the biometric system

Biometric access control Biometric data protection (DPDP)Access-card quantity calculator Facial-recognition privacy

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