TS PiOT in simple terms
TS PiOT stands for "technical means of obtaining product information": a certified software module at the register between the cash register and Chestny Znak (GIS MT). When a DataMatrix code is scanned, it performs the mandatory authorization-mode check and blocks the sale if the code is invalid, expired, withdrawn from circulation, or not registered. Chestny Znak is not being replaced - TS PiOT is a new mandatory unified verification layer within the same ecosystem.
What retail should do: make sure the cash register supports TS PiOT, update the cash register software and 1C, and check the deadline on the official markirovka.ru, because the dates were introduced in stages and postponed.