An online debate is swirling around a tactic that academic publisher John Wiley & Sons uses to fight online piracy. The company created a webpage, accessible by several URLs, that appeared to be an academic paper to automated downloading programs. But any users who accessed the URLs were then blocked from viewing other Wiley content. Wiley and other publishers use these ‘trap’ URLs — which are invisible to most human users — to detect and prevent unauthorized downloading and republishing of their content. But some users say that the tactic is too heavy-handed.
Computational biologist Richard Smith-Unna of the University of Cambridge, UK, brought Wiley’s use of trap URLs to light in late May, after several users were locked out of the university’s Wiley subscription. Smith-Unna, who says that he inadvertently accessed some trap URLs during a data-mining project, tweeted about the lock-out and posted a Google doc containing the URLs. The post incited an outcry from scientists and librarians on social media, and curious onlookers who clicked on the URLs also reported losing access to Wiley content.