In your Settings, you can allow Shake users who you have sent your card to, to be able to share
this card with other Shake users.
To share a card, simply click ‘Share’ on the card page you wish to share.
Select from your Contacts, the person(s) you wish to share the card with.
Then confirm
The person whose card you wish to share will be notified of your request to share their card, and
can approve or deny this request.