Hahaha, well no i really think it's a great idea, but how to reach all those potential miners?
I could finnaly join the miners club :d
The BM1387 ASIC chip is capable of ca 0.07 TH/s and consumes roughly 5 watts.
You would need some 70 millions of those installed to match the current total network hash rate. No need for billions or users.
Phone and PC/laptop manufacturers could add an ASIC to their boards for example.
Or dongles could be made (possibly combining OTP generation with mining killing two birds with one stone...).
Quite honestly the "price" to pay (ie device + energy costs) is well worth it !
I believe that the major issue would be rather on the network bandwidth / latency side of things.
I do not know if bitcoin has been designed with such a heavily decentralized mining in mind.
1 small thing, what about the full blockchain size of 120gb + does it need to be installed on my phone to mine?
Otherwise, with 2 billions of phone's sold world wide the is a potention in it
![Cool](https://bitcointalk.org/Smileys/default/cool.gif)