Two Different Kinds of Open Access Buttons | Be openly accessible or be obscure

"The first kind of Open Access (OA) button is the 'request eprint' button, built into EPrints institutional repository software (or, the request copy button in DSpace software). This button has also been referred to as the Fair Dealing Button, or the Fair Use Button. Stevan Harnad has, especially since 1994, been a passionate advocate for OA. He has also repeatedly pointed out the virtues of Green OA, preferably via an Immediate-Deposit/Optional-Access mandate (ID/OA). This mandate is based on the deposition of articles into freely-accessible institutional repositories. The second kind of button is the recently-launched (November 18, 2013) Open Access Button. It was created by two undergraduates from the U.K. (See: Students Launch 'Button' to Put Denied Access to Research on the Map). This second button should not be confused with the first. The latter button is a browser-based tool that can map who is denied access to a research article. (See: Tracking and mapping the impact of paywalls one click at a time). The two students are David Carroll and Joseph McArthur. They co-authored an article in which they described their reasons for undertaking this project. The article is: The Open Access Button: It’s time we capture individual moments of paywall injustice and turn them into positive change (published on September 2, 2013) ..."