Set an Expiration Date for Shared Access to Drive Files

Google allows Drive users to set an expiration date for shared access on documents. This is great for when you want to provide temporary commenting or viewing rights on documents. Expiration dates cannot be set for users with editing rights at this time.

Here's how it works:

1. Go to your file's shared settings.
2. Add your collaborators.
3. Mouse over a collaborator whose access you'd like to expire after a set time.
4. The timer icon will appear. Click it and set the expiration date for viewing or commenting rights.
5. Save changes.

For more information, check out the Google Apps Updates Blog.