Thanks, Owen;
I understand that sharing a link to my Story Map using an address starting with HTTPS will allow my map readers to utilize the locate button. I don't understand how I control the protocol for sharing a link to my Story Map. Is it as simple as typing in HTTPS instead of HTTP, before sharing, or is it a setting withing the Story Map app?
Mark
Mark — ArcGIS Online supports http and https connections, and you control what protocol is used when you share the link to your story. So just share the story with an https link and readers will be able to use the locate button. If you have any follow-up questions, it would be great if you could please post them to the Story Maps GeoNet space: https://community.esri.com/community/gis/web-gis/storymaps