Yes, the Kwikset 914 is fully integrated into the system... I can lock and unlock my door with the smartphone apps, at the touch screen, on the web portal, with my TV remote via the X1 Xfinity Home app... and of course at the door with the code or with a physical key.
Be careful if you go shopping around for them, there are two different versions of the 914, one with Z-Wave technology and one with Zigbee... you want Zigbee for Xfinity Home.
More information is here: http://www.kwikset.com/products/details/electronic-locks/914-trl-zb-15-ul.aspx and there is a link to buy the right model from Bestbuy.com on that page (which is where I got mine).
It was fairly easy to install, if you're handy it should be pretty simple for you. Pairing the device with the system was also very simple. It comes with instructions and more help is available here: http://customer.xfinity.com/help-and-support/home-security/xfinity-home-door-lock/