TrewGrips Kickstarter campaign failed to reach its $100,000 goal, but that doesnt mean its founders have given up on their dream of bringing rear typing to the masses. TrewGrip today debuted its titular product, a keyboard for smartphones that very literally turns the idea of a QWERTY keyboard on its head. On the Grippity, in contrast, keys are laid out differently and require you to re-master both muscle memory and recall for which keys are where, he says.