In order to send funds from your Casa vault, you need to approve the transaction using one or more hardware devices.
Normally, when you need to apply a signature to a transaction, you conveniently receive an email with a link you can click that takes you where you need to go to sign that transaction.
NOTE: The following only applies to hardware device types that do not use QR code signing. Supported Keystone and Passport devices leverage QR codes and device cameras to request and apply the signature. A laptop or desktop computer is not needed for these device types.
This convenient process of applying a signature by clicking a link in your email, however, is dependent on the infrastructure of your email provider.
Email providers are not immune to outages, and they have the right to restrict user access to their platforms at their discretion. This is why we offer 2 other options for obtaining a transaction signature without needing to rely on an email provider.
The ability to sign without email can be useful if:
- Your email service is temporarily down
- You are locked out of your email account
- Casa's email service is experiencing a delay
- You are worried about the email not being legitimate (a phishing attempt)
The following 2 options only detail how to initiate the alternative methods of signing with your hardware devices, not the signing itself. For instructions on how to complete the process of signing transactions, please review these articles:
Signing a transaction with Keystone
Signing a transaction with Coldcard
Signing a transaction with Passport
Signing a transaction with Trezor
Signing a transaction with Ledger
Option #1
Initiate a transaction as you normally would within the Casa mobile app, and when prompted to add a signature with your hardware device, tap Send email.
Once you tap "Send email," the following screen will appear. Here, you can tap "I didn't get the email" at the bottom.
Tapping that will open up a share menu giving you direct access to the signing link. On this screen, you can choose which application you want to use to share the signing link, or you can copy it directly to your phone's clipboard.
However you share the signing link, you must access that link from your laptop or desktop computer to sign the transaction.
How do I get the link from my phone to my computer without manually entering it into the URL field of my browser?
If you're using an iPhone and Mac, you can use AirDrop or other application to send the signing link instantly from your iPhone to your Mac.
If you're not set up for AirDrop, or you're using Android, Windows, and/or Linux, you can also send a message to yourself containing this link using a different service that you can access from both your phone and your computer. You would simply copy the link address URL from the phone, then paste it into a place where you can send it to yourself. Some examples of messaging apps that can be used on both your phone and your desktop/laptop computer are:
- Signal
- Keybase
Option #2
Initiate a transaction as you normally would within the Casa mobile app, and when prompted to add a signature with your hardware device, tap Send email:
After sending yourself the email, sign into the Casa webapp (https://app.keys.casa/login) on your computer and click on the Action Required button (top-right):
Now you'll see a pop-up on the right side of your computer screen, click on Sign with your hardware device:
You will then be automatically redirected to the online flow of selecting your hardware device's manufacturer and signing the transaction:
These alternative hardware signing methods are just one example of how Casa eliminates single points of failure and strengthens your security setup.
Eliminating reliance on email providers enhances your sovereignty.