GLOSSARY
TSE (Technical Security Device)
A certified technical security device that signs German cash register transactions against tampering.
A TSE is a certified technical security device used with German electronic cash registers. It signs transaction data so sales, refunds, and cancellations can be checked for manipulation later. TSE support is a core part of KassenSichV compliance.
The best implementation is almost invisible for staff: transactions are signed automatically, receipts include the required information, and exports are available when accounting or an auditor needs them.
In the product
Where this term matters in operation.
The glossary is not meant to be academic. It explains the language teams use in Kotao while selling, planning, paying, reporting, and automating.
In sales
Terms like this appear inside POS, checkout, bookings, offers, and customer communication.
In back office
Finance, inventory, HR, and reporting need the same meaning so reports do not drift apart.
In integrations
APIs, imports, webhooks, and exports work better when teams use the same definitions.
Related terms.
Acquirer
Bank or payment institution that signs merchants and routes their card transactions into the card networks.
Apple Pay
Mobile wallet by Apple that tokenizes cards for contactless and in-app payments.
Card Fraud
Unauthorized card use or theft of credentials to initiate transactions.
Card Network
Payment network (e.g., Visa/Mastercard) that sets rules and routes card transactions between issuers and acquirers.