TippyTalk will be delivered in android app form, In order to get this best possible results Rob suggests that you purchase a device that is suited to your budget. There are many on the market.
His personal preference is the Samsung galaxy tablet.
This tablet can be placed in the otterbox lifeproof casing that prolongs the life of the device and helps towards damage that may occur from behaviour issues.
Rob also recommends that this device is used for TippyTalk only. No other apps should be on the device. From his own personal experience and from talking to other parents of kids with autism he found that if there were lots of other apps on a device it was very distracting for the user. TippyTalk should be a communication device only.