While this top-secret prototype is hardly a consumer device, we're happy to give it a Repairability Score.

Project Tango Tablet Repairability Score: 4 out of 10 (10 is easiest to repair).

The rear case is super easy to open with no screws or adhesives—only plastic clips.

Several cables cover the battery and make it a pain to remove—but at least you don't need to melt adhesive.

Low modularity—several components soldered to the same components makes replacement parts more expensive.

Complex internal construction—this thing is full of cables and not at all fun to disassemble or reassemble.