Allow me to be more specific about the type of chip we offer. Our Platinum version (metal card) integrates an NFC chip, allowing secure and convenient sharing of your public address with compatible mobile phones. This functionality is particularly suited to our peer-to-peer exchange model, thus preserving the security of your transactions while offering great convenience. QR code also provides these capabilities on all our cards, whether it's the Classic, Premium, or Platinum version.

Regarding the absence of a SIM card, let me explain our perspective. At Mr. Charles - Cryptocards, our goal is to provide our customers with true financial freedom by eliminating intermediaries and reducing fees. Integrating a SIM card into our products would go against this philosophy as it would introduce an additional element between the user and their funds, potentially resulting in extra fees and restrictions.

Our cards are based on the fundamental principle that the cardholder also holds the private key associated with their public address. This ensures the security of funds even in the event of loss or theft of the card, as long as the private key remains confidential. Additionally, it ensures transaction anonymity, unlike debit cards with a traditional SIM chip that leave traceable records of all financial activities. "The blockchain would lose its purpose."

It's true that some banks offering cryptocurrencies provide debit cards, but these never give you access to the private key associated with your assets, thus limiting your control over your funds.

In conclusion, the absence of a SIM card in our products is a deliberate decision in line with our vision of financial freedom and cryptographic transaction security. Feel free to contact us if you have any further questions or concerns.

Best regards,
The team, Mr. Charles - Cryptocards