Apple Retail has/had an internal communications iPad app called RetailMe that overlayed their employee number in a massive watermark on the screen to capture pe

Apple Retail has/had an internal communications iPad app called RetailMe that overlayed their employee number in a massive watermark on the screen to capture people to leak screenshots. It was slightly visible under normal use, but load it into photoshop and play with the curves and becomes super visible. One day there was an Ars Technica article leaking some news, included a screenshot of RetailMe. I put the screenshot into Photoshop and low and behold there was the employee's ID.