Something you'd normally do yourself, making sure the payment invoice is a match to the destination wallet, but people make mistakes or don't notice that they're sending to the wrong wallet or had their clipboard manipulated. I don't necessarily trust them, not my gig. But TakeMySats works with Branta, who is supposed to store the address from the storefront, so the customer can compare the invoice provided to them is the same as the one the third party has gotten.