Cards an currency

[MBworld]

When people learn something about cryptocurrency and begin to get involved with it, they soon realize that there are actually hundreds of types of cryptocurrencies, known as altcoins. Altcoins may be intriguing facet of the cryptocurrency world.

Now we see many cards coming like Tenx,centra https://www.centra.tech/token-sale/ , each have unique features .. has anyone used such card in real way ?

[miakaplan3]

didn't even know that these things exist... cards huh?