ProQuest eBook Central: Licences
There are four difference eBook licence types available on the eBook Central platform. They determine how many people can use the book at one time and how often the book can be used.
The type of licence in use is indicated under Availability on the middle column of the book detail page
These licences are:
- 1 user (1U) licence - just like with one physical copy of a library book, only one person can "borrow" (read online or download) the book at any time. If you want to read a 1U licence book and someone else is using it, then it's just like a library book being out on loan to someone else; you will have to wait for the book to be returned. If a book is not available, you'll see this in the search results
- 3 user (3U) licence - like a 1 user licence, except there are three copies available. If three people have "borrowed" the ebook, then you will have to wait until one copy is available.
For 1U and 3U licences, If the book you want to read is being used by someone else, then you can place a "hold" on the book. When the book becomes available, you will be notified and you will have 24 hours to access the book before the "hold" expires
- Credit (NL) licence -. the digital library buys a number of ebook credits. One day's downloading or reading online = 1 credit. The number of credits available vary from publisher to publisher, but are normally 200 -400 credits per ebook. An NL licence with 200 credits would mean that 200 people can read the ebook online at the same time or one person could download the ebook 200 times.
- Unlimited access (UA) - there is no limit on the number of people who can be using the ebook at the same time. This is obviously this best licence.
Note: Where possible the digital library tries to use UA licences. Some books, however, might only be available as a single user (1U) or three user (3U) licence.