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According to an announcement by Robinhood, a US stockbroker, starting from December 22, its users (except users in Hawaii and Nevada) can use a personalized digital card to send as little as $1 in Bitcoin or six other cryptocurrencies. At the same time, it will not be lost due to the recipient's rejection or unavailability. Furthermore, the transaction application has set a 14-day gift acceptance window, and the user will not be charged at that time.