# Link to Your App From the Back of an Apple Wallet Pass

If you have an iOS app that works with your pass, you can add a link to the app from the back of a pass by creating an association between the app and the project by entering the app's iTunes Store Identifier (ADAM ID).

* If the app isn't installed on the device, the link opens the app's page in the App Store.
* If the app is already installed, the link opens the app.

## Enable the Wallet Service

> **Warning:** Make sure you perform these steps using the same Apple Developer account
> that is associated with your app's Apple Pass Type Certificate.


1. Log in to your [Apple Developer account](https://developer.apple.com/account/),
   then go to *Certificates, Identifiers & Profiles » App IDs*.
2. Click the row of app you want to edit. You should then
   see a list of services associated with the app.
   ![Viewing services associated with an app](https://www.airship.com/docs/images/app-id1_hu_4fe91ecca7ab4ce0.webp)
   
   *Viewing services associated with an app*
3. Click **Edit**, check the box for *Wallet*, and click **OK** to confirm.
   ![Enabling Wallet for an app](https://www.airship.com/docs/images/app-id2_hu_c24ba375c898f4e5.webp)
   
   *Enabling Wallet for an app*

Although this change may take a few hours to propagate throughout Apple's
system, you *do not* need to resubmit your app for approval. You can now add
the ADAM ID to your project.

## Add an ADAM ID to Your Project

> **Tip:** A quick way to find the ADAM ID is to copy the numbers at the end of the app's App Store URL. If the URL is `https://apps.apple.com/app/id1195168544`,
> the ADAM ID is `1195168544`.
> 
> Another way is to navigate to *iTunes Connect* in the *iOS Dev Center*, find your app, and copy the Apple ID.
> ![Finding your Apple ID in iTunes Connect](https://www.airship.com/docs/images/app-id-connect_hu_84acf1eeb87ba773.webp)
> 
> *Finding your Apple ID in iTunes Connect*


1. Go to *Settings » Associated App ID*.
1. Click **Configure ADAM ID** and enter the ADAM ID.
1. (Optional) Click **+Add An ADAM ID** to add more IDs. They will be listed as *ADAM
   ID 1*, *ADAM ID 2*, etc.
   > **Note:** * Only add multiple ADAM IDs if you have another app to associate with the pass.
>    * Enter multiple ADAM IDs in order of priority. Airship uses the first ADAM ID in the list that is compatible with the user’s device.

1. Click **Save**.


## Delete an ADAM ID

1. Go to *Settings » Associated App ID*.
1. Click **Configure ADAM ID**.
1. Click the X at the end of a row.
1. Click **Save**.