Literal beepers were still in use as late as 2012 as backups for on call people, enough so that we supported them at PagerDuty for redundancy (the API was email

Literal beepers were still in use as late as 2012 as backups for on call people, enough so that we supported them at PagerDuty for redundancy (the API was email->provider->beeper) https://www.pagerduty.com/blog/short-emails-for-your-pager/ https://www.pagerduty.com/blog/short-emails-for-your-pager/