Picking up someone else's bank card to withdraw money from the bank is an act of fraudulently using someone else's credit card. If the amount is more than 5000 yuan, it constitutes the crime of credit card fraud.

The Supreme People's Court's Interpretation of Applicable Law on Criminal Cases of Impairment of Credit Card Management

Article 5 Anyone who uses a forged credit card, a credit card fraudulently obtained with a false identity certificate, an invalid credit card or another person's credit card for credit card fraud shall be deemed as "a large amount" as stipulated in Article 196 of the Criminal Law. If the amount is more than 50,000 yuan but less than 500,000 yuan, it shall be deemed as "a huge amount" as stipulated in Article 196 of the Criminal Law; If the amount is more than 500,000 yuan, it shall be deemed as "extremely huge amount" as stipulated in Article 196 of the Criminal Law.

"Fraudulent use of another person's credit card" as mentioned in Item (3) of Paragraph 1 of Article 196 of the Criminal Law includes the following situations:

(1) Picking up other people's credit cards and using them;

(2) defrauding others of their credit cards and using them;

(three) stealing, buying, defrauding or other illegal means to obtain other people's credit card information and use it through the Internet, communication terminals, etc. ;

(four) other circumstances of fraudulent use of other people's credit cards.