The Cranbrook Institute of Science has encoded  QR codes with relevant information on an ever increasing number of its exhibits, planetarium posters, and more.

Comcast Museum Without Walls will use ID tags emblazoned with a QR Code. By scanning the QR Code with your smartphone or tablet computer, you will be taken to more indepth information regarding the particular item or exhibit you’re viewing.

The Comcast Museum Without Walls ID tags look like this:

Source: Cranbrook Institute of Science