Accepting zero confirmation transactions at POS is a different problem to fees (which are atm admitantly high but that should improve) Merchant picks a solutio

Accepting zero confirmation transactions at POS is a different problem to fees (which are atm admitantly high but that should improve) Merchant picks a solution based on who they integrate with - something like BitGo Instant[0], GreenAddress[1] or an analytics/fraud API provider that adds a risk score to a tx no different to a credit card transaction [0] https://www.bitgo.com/solutions#instant https://www.bitgo.com/solutions#instant