What does 'Waiting for Secrets' mean?

When joining a new group users may see the message - 'Waiting for Secrets' Another participating device must share group secrets with this device.  Here's some tips to help if this message doesn't go away.

• You will need another device, that has the group secrets, online at the same time to share them.
• If you have another device that was already participating in the group try opening GLYPH on that device to share the secrets.
• Mobile devices do a better job sharing secrets, we recommend having at least one mobile device participating in each group to help.
• Stay active on GLYPH to help share group secrets with new devices.  If a device is inactive for five days your account will be logged out for security purposes.
• Review the group members list and try contacting a member through an out-of-band channel, like email or text, asking them to open GLYPH and login to share the secrets.