Jacqui Cheng writes:
… some of our readers drew our attention to something called RLDGUID, a Safari database that has been popping up more and more on iOS devices. What is it, who put it there, and what purpose does it serve? The company behind this database, Ringleader Digital, is basically using some of the modern HTML5 capabilities of mobile browsers to perform the same tasks as a traditional cookie, but out of sight of most users. We decided to dig in and see what RLDGUID is all about, and what we found was sometimes confusing. More importantly, however, it highlights why users should be made more aware of what their browsers are storing about them.
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