Crazy, this is literally what I've been working on all day, too. I started using localStorage but then switched to using BroadcastChannel, did you look into tha

Crazy, this is literally what I've been working on all day, too. I started using localStorage but then switched to using BroadcastChannel, did you look into that? https://caniuse.com/#search=BroadcastChannel https://caniuse.com/#search=BroadcastChannel