MedShelf
One login. Every shop you run.
The server holds one authoritative copy of each shop, so two people at two counters cannot disagree about who got the last strip.

Forgotten the password?

We will email a six-digit code.

Back to log in
Six digits, not a link. A link has to survive an email client, a browser and a handoff on a bad connection; a code you read and type survives all three.