# Prerequisites

In order to perform any kind of interaction with BiometridStandard API, a set of credentials need to be provided for validation on server side.

```swift
static let BIOMETRIDSTANDARD_API_SERVER_URL = "https://test-api-on.biometrid.com/"
static let BIOMETRIDSTANDARD_API_APP = "2aa3ec95-4709-47cc-a84e-0b79adsdwdcb3"
static let BIOMETRIDSTANDARD_API_CREDENTIAL = "87d93251-aee2-4463-be24-29bdwdwdwd3245"
```

* BiometridStandard Server URL
* BiometridStandard API App
* BiometridStandard API Credential

This is also needed for the SDK initialization.

## Implementation example

```swift
class ViewController: UIViewController, InitializationCallback {

    let BIOMETRIDSTANDARD_SERVER_URL = "https://biometrid.com/"
    let BIOMETRIDSTANDARD_API_APP = "375edc52-d2cd-31d6-b353-iu3yd2c789"
    let BIOMETRIDSTANDARD_API_CREDENTIAL = "e8564df-aea7-11e7-b283-04012a0b9901"
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
}
```
