I don't like the shape. I would prefer something more similar to a credit card shape.
Shape of this device looks like a key, and that is part of their logo also, so I understand why they choose to make it like this.I don't fully understand how NFC device can have screen power, but I think that some smartphones usually have ring shape coils inside for charging.
Unfortunately, that also means it's not going to work with certain types of phone cases.
That is true, but most modern smartphones have NFC this days, even cheap models.There's a 22% discount code [LOSTEMPIRE] for those who might be interested in purchasing this product.
Nice find!I will try it later to confirm if it works, but I am not sure if they are sending devices from Europe or United States.
- OLED Screen / 0.91" / 126 x 64 px
Very small tiny screen, like I expected 
But I think of operations will be conducted on smartphone anyway.