To have access to the local clean water system in Narok, locals will pass through a know your customer procedure and be issued NFC smart cards. The KYC will define the identity and water allocation needs of each cardholder. The cards will secure water for individuals or families and direct the allocation of donations. Some people, heads of families, for example, may need more water redeemable donations than individuals. The cost of each contactless smart card is less than $1.
This same operation could be managed without cards by using well-known QR-codes often used for other blockchain transactions. QR-code verification, however, has two important disadvantages when compared with NFC smart cards. Firstly, to complete QR-code verification, participants of a given system must have a mobile device, far more expensive than the one dollar NFC smart cards. Secondly, the information on a QR-code can be easily copied, corrupted, or stolen. The NFC smart cards are more durable and registered to individuals, making them harder to misuse.