Computing
Claim: Bitcoin Cash is not decentralized
Research Links.
This suggests that start up of a new cryptocurrency may have to clear the barrier of sufficient diversity of interests before it is viable and you can rely on its "honesty".
Communication
How to tell if a phone is a landline cellular VOIP
This question occurs to me regularly because you find a number on Craigslist or miss a call and want to text in return but you do not know if they can receive a text.
This webpage seems to be able to tell you:
Arbitrage
Car Radios from Cassette Tape Era Modified with 3.5mm Audio Jack Added for Smartphone Input
Sell prices for these range from 125 to 185 with many selling at 185 USD. Likely they are opening up the circuit input to the audio amplifier and putting this 3.5mm jack that opens up the chain to the audio drive output section.
Research Links
