I got these GPS tracking stickers mainly to give potential thieves second thoughts about messing with my car. The bright yellow color and bold lettering definitely stand out, making them look official at a glance.
Installation was super easy - just peel and stick. I placed one on the corner of my windshield and another on the rear window. They've stayed put through rain and car washes, so the adhesive is strong. The laminated material seems durable enough to last.
While my car doesn't actually have GPS tracking, these stickers create the illusion of surveillance. I noticed people glancing at them when walking by my parked car. Whether they actually deter theft is hard to say, but they certainly make my vehicle look less like an easy target.
The double-sided feature is handy - visible from both inside and outside the car. Though some reviewers mentioned issues with this, mine worked as described. They're not reflective though, so don't expect them to glow at night.
At this price for 6 stickers, they're worth trying as an extra security measure. Just don't expect them to replace actual tracking devices. Pair them with an AirTag for real peace of mind.