Organize email with sub-addressing
Email is still one of the most common ways to register online (from social media to public pay-to-use wifi portals). Which quickly results in a firehose of marketing, notifications and garbage sloshing around in your inbox. Using sub-addressing it is possible to filter and work with the madness.
Bar code print linkology
It is common for academic works to site online sources even when printed in physical magazines or books. Small fonts, fonts with no differentiation between ‘O’ and ‘0’, and incredibly long and complex URLs makes it a nightmare to enter correctly in the browser. So why not shove it all into a bar code that you can simply scan with your phone?