Found Thingsby Might As Well Co.

Type your tag number.

Setting up a tag normally means just tapping it with your phone. This page is the backup for when that doesn't work — an older phone, NFC switched off, or a camera that won't read the code. The number is printed on the tag itself.

Six characters. There are no letter O or letter I on our tags, so if it looks like one it's a zero or a one.