Dansin Wanjohi lives in Mwea, Kenya, and works as an agent for M-Pesa, a mobile money transfer service, a job which requires him to handle cash everyday. During the Covid-19 pandemic, the Kenyan Ministry of Health urged the population to replace cash transactions with electronic payments, to help stop the spread of the virus. However, in much of the country, cash is still the preferred method of payments so Wanjohi decided to come with a solution that would make cash transactions safer.