While some players have become adept at using the rear touch pad, and some games such as Destiny have custom mapping features in game for the sake of Remote Play, in general, most gamers would much prefer to utilize traditional triggers.
Up until now that has only been an option for PS Vita Slim owners, but Japanese manufacturer Joetsu Electronic Industries announced the release of the L2/R2 button grips for the original PS Vita (1000). By simply snapping it on your PS Vita, you’ll be able to “touch” the rear pad by using the mechanism attached to respective L2/R2 triggers!
L2/R2 Button Grip Cover for Playstation Vita 1000 (Black) (PlayStation Vita, JPN)
Owning a PSVita Slim? Joetsu Electronic Industries have already released an L2/R2 grip for you!~