Booth scanner: what this link is and whether this device is unlocked

Header x-medbuk-scan-link carries the link token (never a URL) and x-medbuk-scan-device the optional device secret. Only the merchant web app's signed connection may call it.

curl -X POST "https://example.com/v1/scan-links/context"

{  "merchantName": "string",  "outletName": "string",  "linkExpiresAt": "2019-08-24T14:15:22Z",  "unlocked": true,  "deviceExpiresAt": "2019-08-24T14:15:22Z"}