My internet provider offers up to 4 sim cards per account. They cost once 10€, without a monthly fee. However they have only 300mb of high speed traffic. But this should be just fine for a tracker, no? Just have a look in your customer portal. Maybe you’ll find something there too
Comment on Air Tag Alternative
jagermo@feddit.org 4 days ago
look for gps tracker with a sim slot and a cheap sim card. However, these probably need to be charged on a reguar basis.
Chaser@lemmy.zip 4 days ago
AllNewTypeFace@leminal.space 4 days ago
The problem is that GPS signals are weak, and generally need a line of sight to the sky. Phones don’t rely on GPS alone, but also get location data by triangulating base stations and/or querying databases of WiFi SSIDs over the internet. And AirTags don’t contain either a GPS receiver or an internet connection: they’re just simple, low-power Bluetooth beacons which send an encrypted ID to any nearby iPhones, which add their locations and forward it to Apple.
Basically, all the smarts are in Apple’s infrastructure (including the numerous privately-owned devices running Apple’s location services). Replicating this without a network of roving receivers is a nonstarter.
Honytawk@feddit.nl 3 days ago
Bikes generally are used outside, so they have clear line of sight most of the time.