Examine source code of MIP Fingerprint

{
  "applications": {
    "gecko": {
      "id": "mipfingerprint@mip.co.za",
      "strict_min_version": "42.0"
    }
  },
  "background": {
    "scripts": [
      "fingerprintnative.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*run.w*run=eamtk_enroll_*",
        "*://*/*run.w*run=eattr_auth_*"
      ],
      "js": [
        "fingerprintfirefox.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "fingerprintapi.js"
  ],
  "description": "MIP Finger Print Communicator.",
  "icons": {
    "128": "icon-128.png"
  },
  "manifest_version": 2,
  "name": "MIP Fingerprint Communicator",
  "permissions": [
    "nativeMessaging",
    "activeTab",
    "*://*/*"
  ],
  "version": "1.0.0.6"
}