Ringgold presented at the 2016 Frankfurt Book Fair Professional & Scientific Information Hot Spots Stage on Wednesday 19 October. As industry experts, we wanted to share our knowledge of ‘The 5 Things You Need To Know about Persistent Identifiers’. The use of persistent identifiers has become much more widespread in scholarly communication. Ringgold explained the importance of PIDs and why you should be using them to your advantage whatever your role in scholarly communications.