You don't need to buy an expensive GPS device, especially when you start geocaching in urban areas or on easy terrain, or for spontaneous searches. Nowadays, a GPS-compatible smartphone and a corresponding app are all you need to go on this adventurous kind of treasure hunt. Download one of the countless apps for navigation and activate GPS reception on your smartphone. Please note: the battery will run out quickly. It is best to take a spare battery or a power bank with you and deactivate all functions that are not needed when geocaching.
If you are in Alpine or more difficult terrain, a weatherproof and shockproof GPS device with reliable reception is the best choice. You can find the official geocaches in Ötztal with both mobile phones and GPS devices. There is also the option of using a printed treasure hunting map - ideal for families and friends of the analogue world.