国立アメリカ歴史博物館のインスタグラム(amhistorymuseum) - 3月5日 00時40分

Rare coins, early credit cards, clam shells used as money during the Great Depression. Our Gallery of Numismatics will share some fascinating financial history when it opens in July. Today, we also added something new, representing emerging numismatic tech: a collection of Square technology.

Square technology was invented by entrepreneur Jack Dorsey and computer science engineer and economist, Jim McKelvey. The idea emerged because McKelvey, who is also a glass artist, was having difficulty accepting large payments for the sale of his artwork. When unable to process credit card payments from his clients, he and Dorsey began working on a portable and inexpensive method of processing debit and credit card sales.

Learn more by clicking the link in our profile. ??? #money #numismatics #chaching

[BIHAKUEN]UVシールド(UVShield)

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