Micro $3 Bitcoin miners won’t make bank, but that’s not the point: Inventors By Cointelegraph

While lacking in performance, micro mining devices should be seen as a stand against the Bitcoin ecosystem’s purportedly biggest flaw, its inventors argue.

Micro Bitcoin mining devices — often open-source and pocket-sized — have been serving a niche part of the market, offering buyers a fully assembled device or a do-it-yourself-kit to mine Bitcoin (BTC) solo.