Alex Tholl is an engineer who has always loved working with his hands. In his youth, he enjoyed hands-on woodworking, but a serious accident during one project caused him to lose his ring finger—an event that greatly changed his daily life. Determined to move forward, Alex began designing his own solution. With his engineering skills and the support of close friends, he first created a realistic finger prosthesis. As 3D printing technology emerged, he went on to develop 3D-printed finger prostheses with gripping ability and touchscreen support.