Once you've invested the time in your Simsort inventory, it's important to keep it fresh. Every time a resident gets new clothes, add an RFID tag and inventory them in the Simsort app.
We recommend you add mention of this to your resident move-in information packet. Make sure residents and families know that those new clothes they bought mom for her birthday should be added to their Simsort inventory, so you can do your best to make sure they never get lost.