A BMO spokesman said in an email Tuesday that customers will no longer be allowed to use Interac debit cards or Mastercard credit or debit cards to purchase digital currency. It is reported that transactions for MasterCard products will be completely blocked. Customers who use Interac cards to purchase digital currencies will be temporarily charged, but Interac transactions will eventually be blocked. On March 19, BMO no longer allows customers to purchase digital currency using MasterCard debit cards and credit cards. On March 30th, a person claiming to be a BMO employee posted a bank note on Reddit. “This decision is due to the instability of the digital currency. The bank’s move is to better protect the security of its customers and banks.