This product comes with a chip, so it can be registered if your apartment building supports it. There are also Rakusee keys that start with TLRS, so please check the model number carefully before purchasing to see if registration is possible. This one is TLRS2. Also, please understand how to register before purchasing. You will need to request registration from the locksmith designated by your apartment building. In that case, if you purchase this, you will only need to pay the on-site registration fee. This cannot be used as a key itself. It can be used as a key integrated with a PR-type key if you replace the attachment. Please understand that the battery needs to be replaced. Please check the manufacturer's website for details: https://www.rrrmaji.com/product/13781