You may think you are preventing a secondary market in the tokens themselves by means of the retina scan, but once the tokens are exchanged for goods it's almos

You may think you are preventing a secondary market in the tokens themselves by means of the retina scan, but once the tokens are exchanged for goods it's almost inevitable that a secondary market will develop (prisoners use anything from noodles[0] to cans of tuna fish[1] as their 'currency'). There will also be theft, it just will be of goods, not tokens. A cynic might think that the NGOs and governments will just dismiss these issues as the refugees' problem. "We saw that all funds were distributed to the correct recipient. because blockchain!" Life will find a way. It's not always the way you expect. [0] https://www.theguardian.com/us-news/2016/aug/22/ramen-prison-currency-study https://www.theguardian.com/us-news/2016/aug/22/ramen-prison... [1] https://www.theguardian.com/society/shortcuts/2016/aug/23/what-do-british-prisoners-use-as-currency https://www.theguardian.com/society/shortcuts/2016/aug/23/wh...