Sharing your Padlet with specific users is the most secure way to share a Padlet. It prevents users from sharing a Padlet with anyone except the people you have specified.
The only people you can add to a Padlet are those who have already created a Padlet account. Here are the instructions for how to create a TC Padlet account. You can share these instructions with TC students and TC colleagues by clicking on the link and copying the URL.