According to hacked screenshots, payments would send the same way you can now send a photo. You'll be able to add a debit card to Messenger, use one that's already on file with Facebook, and add a PIN for extra security. PayPal, Venmo, Square, and even Clinkle might have a new competitor on the horizon — Facebook Messenger. According to hacked screenshots by Stanford computer science student Andrew Aude (via TechCrunch's Josh Constine), payments would send the same way you can now send a photo. You'll be able to add a debit card to Messenger, use one that's already on file with Facebook, and add a PIN for extra security. This isn't the first time signs pointing to upcoming payments has been found in messenger, TechCrunch reports. Security researcher Jonathan Zdziarski found code that said as much last month. Aude told TechCrunch how the payments work (at least so far): Aude played around the with feature and its code. He tells me you simply hit a bu...