Charles Hoskinson, the CEO of IOHK, has demonstrated a new crypto gadget on Twitter. In a video, he taps a small card against his smartphone, which opens a Cardano wallet. He doesn’t explain exactly what the card is for, but the implication is that it is a payment tool:

This has left some users very frustrated. In response, Hoskinson has chided them for lacking a “sense of imagination and discovery.” One commenter has suggested that more will be revealed during the IOHK Summit in April—although that would be a long wait for a simple answer.

What Is It?

Some community members have already figured out what the card is. As suggested by the minuscule logo in the video, the card was created by Tangem, a Swiss company that makes cryptocurrency “banknotes” that can be scanned with a smartphone. These are being rolled out over the course of this year.

Tangem explains that its banknotes act as a store of cryptocurrency. The notes are…

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