So to chime in on the whole Tech owning their own tools. I hate to say this but that works fine for Auto Mechanics because they are working on random people's cars. If the Tech doesn't have the right size wrench he'll jsut use pliers or an adjustable wrench, face and corners be damned, won't matter not their problem. Same with a torque wrench, let them just tap it a few times, or use the air gun.
Move over to the industrial world and a real manufacturing/process plant where over torquing something can stop production, or damaging the bolt can cause delays in repair (lost of production) and we have a real problem. Most plants do not allow Techs to bring in their own tools. I know Plants that have banned adjustable wrenches (if you don't' have the right tool for the job don't' do it mentality)..
All that being said in real industrial settings, tool control is a big deal. The more sterile and regulated the environment the more important it can be. See the link below where it was a contractor failing to do a tool count that did some real damage.
Tool counting is a basic thing, and should always happen. Things like this tool box can be used for good and bad, it all depends on the culture of the company and people using it. Sure they could use it to bash people over the head for loosing tools, but they could also use it as a safe guard/helper/checker to help the tech out in doing a tool count to make the work go quicker. I know places where this would be seen as yet another big brother in the plant, and places where they would love to have this because it would make their job easier and quicker. Its all about culture.
Personally i love the simplicity of it, although i will say that you have to have a solid 5S/Shadow boarding in place to use in place light sensors like this. It would work very well for specialized tool sets, but not your run of the mill mechanics toolbox. For that cheap RFID tags/single box reader might be more appropriate. (and could also be used for locating the tools if lost in the equipment).
Trust me that the cost of something like this is a drop in the bucket compared to the costs of real specialty tools, and the impact to production/operations when a tool is lost.