Tinkering

 is one of the research branches of the ./Research app in Watch Dogs 2. It has 6 nodes, 4 key data items, and a total of 34 research points are required to max out the skill.

Tinkering Upgrade Track

 * Electroshock Device
 * Explosive Device
 * Expert Tinkering
 * Electroshock Optimization
 * Tweaked Blast
 * Explosive Optimization