Yes, totally. With this library's functionality, we found the ability to track specific events and view them in-app during field tests to be invaluable!
Hi! I'm on the mobile development team here at goTenna. We're taking advantage of the Bluetooth LE standard encyption with is AES-CCM. More on that here: http://bit.ly/1teKWvG
For encrypting the data as it's sent between gotennas we're using 1024 bit RSA. Not sure what level of detail you'd like.. but here are a few things to get you started!