I've had a few requests from clients recently with queries around updating contact details and permissions with the new GDPR data protection legislation coming into force in Europe in May.
As a result I've developed two very simple extensions which I'd like to share:
Contact Checksum
This extension provides a simple UI under the contact summary via Actions->Contact Checksum.
When opened a simple UI is displayed with information and example links to use in emails when sending personalised / "update your details" links from CiviCRM.