I bought an Invoxia GPS tracker for my e-bike. It's small enough to secrete inside the frame, battery should last a month before re-charge. You can set up zones so that you are alerted on your phone if it the tracker leaves that zone. It cost just under €100, and does not require a sim card or a monthly subscription for the first 3 years. After 3 years, it's €10/year.
![[Linked Image]](https://www.tm-img.com/images/2020/10/11/CF2A4440-5110-497C-9311-6DF7AF6714DB.jpg)