This card tracker can be placed in your car, wallet or luggage. You simply pair it in your phone and hide it. It works with both iPhone and Android phone. It uses the same mechanism as an airtag, it uses nearby smart phones to update it location through a technology called Ultra wide band so you won't also get live location. It has a lifespan of 3 years, Don't use it to tracker other people because they will be notified they are being tracked through Thier phone.