How can I make sure that I’ve bought an original card?

Tangem cards cannot be physically modified, as there is a monolithic chip inside the card. Tangem cards cannot be modified in terms of software.
The official app can accurately check the following:
— that the card was produced by Tangem;
— that the card is flashed with Tangem software.

Tangem’s end-to-end certification means it’s entirely safe to buy, even in a city underpass. The most important things to note are that:
1. You have installed the official Tangem app.
2. The cards prompt you to create a wallet. If not, reset the cards to factory settings.