BBC News
By Zoe Kleinman
image copyrightOrla Barry
When journalist Orla Barry received a notification from her iPhone informing her that her period was due any day in the next three weeks , she shared it on social media with wry amusement.
It wasn t the first time she d received such an unspecific notification from the app, and it prompted others to share their stories. I got one which said my period was 56 days late, wrote one. My notification said the next nine days , said another.
One man said his smartwatch had a menstruation tracker activated by default when he got it, and it kept telling him his period was due - despite him never having had one.