Because of the Olympic Games, from 18 July to 25 July inclusive you will only be able to access the EFEO with a digital pass.
Available from the official website.

To obtain this pass you will need to provide a "proof of visit" issued by the EFEO library.

The request for this receipt should be sent to bibliotheque@efeo.net, who will reply within 48 working hours. Once you have your receipt, you can download the pass from the dedicated website.

The EFEO and the library will close on the evening of Thursday 25 July and reopen on Monday 19 August at 9am.

There are no restrictions on access during the Paralympic Games in September, so no passes will be required.