References in periodicals archive ?
To withdraw money transferred via M-Pesa to an Airtel Money user involves at least four steps that includes presentation of M-Pesa voucher number and the one time code displayed on customer's SMS notification to the agent.
All they need to do is type in the numbers that appear in the squares of their unique pattern, which is their One Time Code (OTC).
The idea is that when you order goods, a 'one time code' is sent to the retailer via your phone, internet or fax.