The most common cause of the failure to recognize a fingerprint is simply that – the system and a specific employee no longer interact with each other effectively. When an employee is unable to access the Aloha POS system with a fingerprint scanner, the first test you should make is to determine if the failure is isolated to one employee, or if all employees are unable to access the system. If the problem is isolated to a single employee, enrolling a new fingerprint for them tends to restore their access. The new pattern replaces the old one, resolving the issue.

If the problem extends beyond the initial employee to include most or all employees at a site, you must perform additional analysis to establish the cause.