Yeah so I watched that video and the dude is a shithead. I call him a shithead because he is making a false statement about his antenna… so either he is just lying or he is super ignorant about how NFC antennas actually work… specifically he says “… the two contacts on the back of the antenna allow you to add any kind of NFC chip that you can solder and fit inside the watch.” … this is absolutely false. As I said before there are tons of different types of NFC chips with different capacitances which means they each need a unique antenna design of the proper inductance to properly resonate at 13.56MHz … if you stick a 17pF P60 chip to an antenna designed for a 70pF P71 chip (both “NFC chips”) then you’re gonna have a bad time. This is just lazy or stupid.
Next he says “One very cool option is to use the chip from a tap to pay card. There are tutorials on the net showing you how to dissolve the card plastic to reveal the chip and antenna that can be soldered into the watch. I’m pretty sure you can also buy chips with their serial numbers unlocked, allowing you to clone your card. Either way, it would be pretty cool to be able to make direct payments” … meaning he is saying you can clone a credit card to a sector 0 writable magic mifare chip to make payments… also just flat out wrong. For the real deal on that read this;
I had to stop watching the video at that point… it was starting to anger me. I’m pretty sure this is misinformation put into the video just to make people give up and buy his modified watches. If you’re going to share how-to videos, share the information… don’t purposely confuse people into buying your products.