Transient existence
Can’t be saved
Max transaction trivial
Exchange after delivery
NOT a currency.
Minimum unit based on minimum unit of local currency
International rate of exchange based on algorithm?
Open source software:
- App for dispensing. Runs on server
- App for Paying “Stamp Pad” in browser
- App for collecting
Typical cost per click = $0.5
alternative to cost per click
Like: voluntary gift
Auto for site eg wikipedia, search