This is admittedly NOT a biohacking project, but I feel like the need for compact options is something that might be familiar to biohacking.
I would like to use an rf technology like an airtag to perform ‘inventory’ checks of my firearms and firearms accessories at regular intervals and log that information, so that if ever something went missing, I could have evidence and alerting. An airtag is too big to put inside a magazine for instance. And I don’t want to glue one to the slide of a pistol. But there is a few MM of dead space inside some triggers, or in the slide of some pistols. There’s a few MM of dead space inside the spring of a magazine that could hold something in it. But in most cases it would be inside a heavy metal body.
Is it physically possible for airtag (BLE) antennas to fit in areas that small? If so, is anyone making rice-grain sized airtag transponders?
Airtags aren’t actually RFID, as you stated they are BTLE which is different.
Anything active like BTLE is going to require a battery limiting how small it can be.
Look into UHF RFID tags. They are commonly used for inventory management. Each tag has a serial number. You would need to get or create a system that you would use a long range reader to collect the serial numbers and store a list of inventory. Then at a later date you scan again and compare the list of inventory with what you scanned. You could automate this with fixed position long range readers, depending on how big the storage area was. Note that UHF tag range is going to be reduced around a lot of metal. Any RF technology is going to have a hard time communicating surrounded by metal.
UHF is a great suggestion, and there are also “on metal” UHF Tags.
Inside a metal object will indeed reduce the read range, so a polymer/wooden etc. handle or butstock would be a better option.
You could try one of these, set up at a door or next to your safe
I actually have one of those along with a large panel antenna they sell. I was a COO for a company and looking at low cost warehouse inventory solutions…never did anything all that useful with it.
What type of firearm is it. Some companies make airtag alternatives that with a little bit of dremel work might be able to fit in your magazine well. I saw one from pebblebee that was pretty small and I remember seeing wallet cards in the past
Idk how the community feels about this kinda thing. But if it is for your EDC and you are in a area you can legally do it, you could try 3d printing a frame with a larger magazine well to fit an air tag. And bonuses points you get to pick your serial number!
Sig p365. I’d think that inside the mag spring there’s a decent volume of unused space. Surrounded by quite a bit of metal though… The frame is plastic. Its too bad there’s no laser/light modules that include an air tag. That could be handy!
I’ll take a look later that is not a bad idea to have it on under the barrle. If I put one on my pistol I want it where it cannot be removed with just a Allen key. Pluse with the SIG the “firearm part” is not the frame so you can go hog wild. I have always wanted a tracker plus RFID lock on my pistol I am just worried about it not working the moment it needs to
