[whycome]

I fully expect Apple to release the airTag in different form factors. They can then also sell a whole bunch of new accessories. A 'pen' form factor with replaceable AAAA battery might be perfect for myself.

[fragmede]

They've licensed the technology, so you can get an airtag in, eg, the form factor of a credit card.

[whycome]

These options exist?? That seems like a better option for wallets.

[gorgoiler]

Another useful form factor would be the battery itself. Replace one of your AAAs with an AAAirTag, albeit at the expense of some mAh.

[aembleton]

Great idea. You could probably use a lithium battery to give you similar mAh.

[dieortin]

You would lose on voltage, and your item would probably stop working

[0xffff2]

The idea would be to engineer a product that is both a low-capacity battery and an air tag.