A POS system quietly accumulates a lot of sensitive information over time — sales history, customer details, sometimes payment data — and it's worth treating that accumulation with a bit more care than a typical retail login.
Use individual logins, never a shared password
Beyond the accountability benefits, individual logins mean a compromised password affects one account, not everyone's access at once — and it's far easier to revoke one person's access than to reset a password everyone knows.
Use strong, unique passwords for the POS account specifically
Reusing a password from another service means a breach elsewhere can compromise your POS access too — a unique password here specifically limits that risk.
Enable two-factor authentication if it's available
An extra verification step beyond just a password meaningfully reduces the risk of unauthorized access, even if a password is somehow compromised.
Log out on shared or public devices
A tablet or computer used by multiple staff members, or one left logged in at the counter overnight, is a real and avoidable vulnerability — logging out at shift end costs seconds and closes an easy gap.
Review who has access periodically
Former employees, temporary staff, or old test accounts still holding active access is a common and easily overlooked risk — a periodic review catches this before it becomes a problem.
Keep software updated
Security patches and updates exist specifically to close known vulnerabilities — a cloud-based system generally handles this automatically, which is one practical security advantage worth factoring into the cloud-vs-traditional decision.