PayPal Here, despite all its focus on in-store transactions, hasn't really been available to buy in a US store -- that's been the domain of the seemingly ubiquitous Square reader. eBay's payment wing has at last established that retail beachhead through a deal with AT&T. About 1,800 of the carrier's stores are now carrying PayPal Here readers, and they'll keep the service's big rival from hogging the spotlight at a time when most aren't even aware that there's any competition. If you're still cynical, you can look at the AT&T move as a matter of convenience: at least this way, all your account headaches will come from one place.