The bar codes of Madonna, Britney Spears, Michael Jackson and any celebrity can be created with online bar code generators with the input of a name.

The bar code is celebrating its patent's 57th anniversary today and several websites are recalling the code's debut in an Ohio supermarket in 1974.

Google is featuring a bar code on its main page logo that says Google.

Currently the bar code is used to track almost anything bought and sold in many countries.

See the bar codes of several celebrities below, according to Barcodesinc.com:

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(Credit: Barcodesinc.com)
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(Credit: Barcodesinc.com)
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(Credit: Barcodesinc.com)

See the bar codes of Brangelina, Jennifer Aniston, Will Smith:

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(Credit:Barcodesinc.com)
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(Credit:Barcodesinc.com)

Do you think they would make good tattoos?