Bluetooth trackers are small tracking devices that can be attached to keys, purses, suitcases or other items. They are designed to help you track down lost items. Stiftung Warentest tested 24 trackers for Android and iOS. These included 19 tags or chips that are suitable as key finders, for example, as well as five trackers in cheque card format for your wallet...

The Bluetooth tracker presented in 2021 is larger than a €2 coin and barely thicker than a chewy sweet. Although it fits well in the coin compartment, it bulges the wallet a little. Its white plastic housing is just as shiny as the metal underside that covers the battery. Both are quite sensitive to scratches...

If you have an iPhone, the AirTags are the most recommended key finders. At least this is true in urban areas, because every iPhone extends the search range. The AirTags are by far the most accurate, but this comes at the cost of range.

Apple's AirTag is the best tracker, but it only works with iPhones. Samsung is the closest with its SmartTag+, but it is also limited to the manufacturer's own devices. For those who want to save a few euros and can do without UWB for close range, the SmartTag without Plus as a price-performance winner is an alternative. The trackers from Tile and Chipolo are not convincing.

You can twist and turn it however you like - the Apple Airtags are cooler and easier to integrate into the Apple universe. Our impression is: If you want to have it easy and also always have the orientation of where approximately the tracker is currently, you are better served with the Apple Airtags, but you have to accept additional costs for attaching them to certain objects...