This is an objective of the Serval Project. Our Serval Mesh software for android currently provides secure voice / chat / file distribution over local networks. But since Wi-Fi has such lousy range, we're also planning to build and sell small Wi-Fi routers with 915MHz ISM band radios for long range / low bandwidth links.

While we're focused on local communications in places where the infrastructure is down / never existed / can't be trusted, with the addition of a Distributed Hash Table, we could provide services over the internet.

Don't blame the application developers here. The poorly designed permission structure of android is mostly to blame. Any voice and text application that wants to integrate with the rest of android, needs to ask for nearly all of the permissions.

But this app seems totally dodgy. Free communications? No adverts? Where the hell are they getting the funding to run any servers and application development?

"If you aren't paying for the product, you are the product".

I'm picturing an xbox kinect-ish system that tracks each person entering, follows their movement and the movement of their limbs, and remembers if your hands got close enough to the sink / sanitiser. Then only if you head towards ICU and attempt to open the door, an alarm sounds so that your peers in the room notice, and a video recording is kept.

"Lets create the folder first, and immediately start a rename operation, because writing the code that way will be easier"

I can't say that I agree with that design decision.

F = m * a

Look it's right there, force equals *mass* times acceleration. On earth, Scarecrow is 342kg * 1g when stationary. On mars Curiosity is 900kg * 1mars-g *when stationary*. Sure the vertical force on the tires is the same when standing still, but what about the force required to stop 342kg vs 900kg of inertia if you hit a large pointy rock at 1m/s?. In this case, with the same initial velocity, the acceleration would be the same but the force experienced by Curiosity's tires would be ~3x larger (ignoring any shock absorption).

But this trend is mostly *because* of the current console lifetimes. Most games are written to be ported to or from the main consoles.

Do you think that trend will change when PS4's and XBOX One's are becoming common?

If your customers are complaining about bugs, and those conditions are covered by your spec, then you are at fault for not catching it before giving it to the customer. You must verify that the delivered code matches your spec.

Either write automated tests based on your spec yourself, or get a developer to write them and review them yourself. Otherwise you will have to test everything manually, every time they deliver you new code.

But even then, your customer may encounter issues that you didn't test for.