Share links automatically expire at a time of your choosing, and they can only be used on one device. Even if you forget to un-share the record, it will expire and access will be revoked. As an additional layer of security, One-Time Shares are device-locked which means that only the original recipient is able to access the data. If the link is later opened up by a third party, or your email account is compromised, the link cannot be accessed, except on the original device.