If your passkey is synced/saved to iCloud or Google, sign in to that same icloud/google account on another phone, tablet or computer, download Send or go to send.app and choose "Sign in." Your passkey comes with you
If your passkey is synced/saved to iCloud or Google, sign in to that same icloud/google account on another phone, tablet or computer, download Send or go to send.app and choose "Sign in." Your passkey comes with you