You specialize in making equipment that works with or enhances what a user is already capable of doing. Ranging from making a taser gun powered by the user's electricity powers to lung augmentations that significantly improve the user's ability to hold their breath. This synergizes with the powers you have, making them better and easier to control with your Tinker Tech. A user will be able to maintain and use Tinker Tech built for them with proper training or manuals.