Ziggy the Hamster ☎️ 4ZTHDec 27

Can someone explain why German point of sale systems seem to be in debug mode? Who needs to know this is an ECDSA-SHA-384 signature? Is it the literal word unixTime instead of the current unixTime? This was my dinner receipt, why all the cryptography? I hadn’t even paid yet!

#39c3

Show threadNico
@ZiggyTheHamster
It's the TSE signature: https://k-series-support.lightspeedhq.com/hc/en-us/articles/14949401075355-Understanding-German-fiscal-compliance-TSE
Understanding German fiscal compliance TSE

As of January 1st, 2020, Germany introduced a new tax regulation (Kassengesetz) that requires all electronic cash registers to comply with specific guidelines. This regulation requires that Point o...

Lightspeed Restaurant (K-Series)
Dec 27 at 9:37pmWeb