Note in there are a lot of prepaid cards (that can be mastercard&#x2F;visa cards) that focus on children.<p>E.g. Osper (<a href="https:&#x2F;&#x2F;osper.com&#x2F;" rel="nofollow">https:&#x2F;&#x2F;osper.com&#x2F;</a>) in the UK is a pre-paid Mastercard that targets 8-18 year olds.