Could you elaborate on what a crypto voucher gift card entails? I'm curious to understand its purpose and how it functions within the realm of
cryptocurrency and finance. Specifically, I'd like to know if it's a physical or digital card, how it's redeemed, and what types of cryptocurrencies it can be used for. Additionally, I'm interested in understanding any potential benefits or limitations associated with using such a gift card, as well as any security measures implemented to ensure the safety of the transaction.