TSE (German fiscal device)

A TSE, or Technische Sicherheitseinrichtung, is a certified security module that German law requires electronic cash registers and point-of-sale systems to use. Every transaction is signed and logged by the TSE in a way that makes later tampering detectable, so recorded sales cannot be quietly deleted or changed. The measure is aimed at preventing till fraud. Receipts must show TSE data, and the signed records must be exportable for a tax audit in the prescribed format. The TSE can be a hardware element or a cloud-based service, but its use has been mandatory for electronic tills for several years. For a German campground, any on-site till (shop, restaurant, kiosk, reception payments) falls under this rule, so the point-of-sale system must be TSE-connected. It sits alongside GoBD, which governs how the resulting records are kept and made available.