That never worked right for me. Every phone had its NFC chip at a different location on the back, so you always had to figure out where the hell you had to tap the phones.
Was called Bump. And then Apple introduces it this year as if it’s some new thing.
I have no idea why sharing files between devices has to be so complicated. Bring the devices close together, get NFC connected, use P2P wifi to send the files. This is not that difficult.