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liveness-detection's Issues

Issue on devices with camera resolution > viewport

Hi team,

From what I can tell, this solution seems to load the media stream for the web client at raw dimensions regardless of the page size. In situations where the camera has high resolution relative to the screen size (e.g. mobile browsers) this causes the page to overflow and seems to somehow break the maths of the challenge in some cases - struggling to get to green box or recognise nose placed in the yellow box.

Observed on Android devices, emulated iPhone, and laptop Firefox and Chrome (by reducing the browser window to minimum width)

Intermittent NetworkError caused by TypeError in verification Lambda

Hi folks,

I've been seeing an intermittent issue which manifests as NetworkError in the front end, but the underlying cause seems to be an unhandled exception in the verification Lambda (because CORS headers don't get set on the error response through API Gateway, so the issue appears as a CORS/network issue on browser side).

Stack trace below but I haven't had chance to dig in to it yet - I wonder if there's something about the number of frames uploaded for the check that can affect the dimensionality of the variable in question?

[ERROR] TypeError: only size-1 arrays can be converted to Python scalars
Traceback (most recent call last):
  File "/var/task/app.py", line 52, in lambda_handler
    status_code, response = execute_if_token_is_valid(body['token'], challenge_id, verify_challenge, challenge_id)
  File "/var/task/app.py", line 68, in execute_if_token_is_valid
    return func(*args)
  File "/var/task/app.py", line 143, in verify_challenge
    state_manager.process(frame)
  File "/var/task/states/manager.py", line 19, in process
    success = self.current_state.process(frame)
  File "/var/task/states/nose.py", line 66, in process
    verified = self.verify_challenge(rek_landmarks, rek_pose, self.challenge_in_the_right)
  File "/var/task/states/nose.py", line 92, in verify_challenge
    trajectory_error = math.sqrt(residuals/len(self.nose_trajectory))

Language implementations

Hi guys, it would be great if you could provide other language reference implementations such as Java and .net.

[Feature Request] Centralized failure reason logging

By nature of the way the sample challenge works (split between challenge generation, on-device analytics, and Rekognition-based verification) there are multiple stages within the flow where failure can occur.

We'd like failure events (regardless of on-device vs in-cloud) to be logged in a centralized way independent of the failure reason - both for initial debugging of the app on new platforms, and for management of the challenge flows in production. For example if making changes to the generated challenges, to understand downstream impact on failure rates both for on-device and Rekognition.

CodeUri' is not a valid S3 Uri

hi I tried deploying your solution using the yaml in cloudformation but I get an error and it rollsback - 'CodeUri' is not a valid S3 Uri

Specification document. Number of errors found: 1. Resource with id [ChallengeFunction] is invalid. 'CodeUri' is not a valid S3 Uri of the form 's3://bucket/key' with optional versionId query parameter.. Rollback requested by user.

I would appreciate if you could point me in the right direction to resolve this please thanks

Frontend npm install command failing - [ ERROR Failed to compile with 1 error ]

Hi Team,

I was checking this up and while replicating at the lab end i notice the npm error while installing the frontend.

Step 5: Run the comamand below to build the frontend:

npm install && npm run build

ERROR  Failed to compile with 1 error                                                                                                                                                           

error  in [internal]

INTERNAL ERROR(undefined,undefined) Cannot destructure property 'script' of 'result.descriptor' as it is undefined.
stack trace:
TypeError: Cannot destructure property 'script' of 'result.descriptor' as it is undefined.
   at Object.parseComponent (/home/ec2-user/liveness-detection/client/node_modules/@vue/cli-plugin-typescript/vue-compiler-sfc-shim.js:6:13)
   at Function.resolveScriptBlock (/home/ec2-user/liveness-detection/client/node_modules/fork-ts-checker-webpack-plugin/lib/VueProgram.js:196:35)
   at Object.host.getSourceFile (/home/ec2-user/liveness-detection/client/node_modules/fork-ts-checker-webpack-plugin/lib/VueProgram.js:106:45)
   at findSourceFile (/home/ec2-user/liveness-detection/client/node_modules/typescript/lib/typescript.js:101559:29)
   at processImportedModules (/home/ec2-user/liveness-detection/client/node_modules/typescript/lib/typescript.js:101900:25)
   at findSourceFile (/home/ec2-user/liveness-detection/client/node_modules/typescript/lib/typescript.js:101607:17)
   at /home/ec2-user/liveness-detection/client/node_modules/typescript/lib/typescript.js:101436:85
   at getSourceFileFromReferenceWorker (/home/ec2-user/liveness-detection/client/node_modules/typescript/lib/typescript.js:101403:34)
   at processSourceFile (/home/ec2-user/liveness-detection/client/node_modules/typescript/lib/typescript.js:101436:13)
   at processRootFile (/home/ec2-user/liveness-detection/client/node_modules/typescript/lib/typescript.js:101259:13)

ERROR  Build failed with errors.

To get rid of the error just a quick workaround was to skip the dependency in the packages.json file.

{
  "name": "liveness-client",
  "version": "1.0.0",
  "private": true,
  "scripts": {
    "serve": "vue-cli-service serve",
    "build": "vue-cli-service build",
    "lint": "vue-cli-service lint"
  },
  "dependencies": {
    "axios": "~0.21.1",
    "core-js": "~3.6.5",
    "face-api.js": "~0.22.2",
    "js-logger": "~1.6.0",
    "uuid": "~8.1.0",
    "vue": "~2.6.11",
    "vue-lottie": "~0.2.1"
  },
  "devDependencies": {
    "@types/uuid": "~8.0.0",
    "@typescript-eslint/eslint-plugin": "~2.33.0",
    "@typescript-eslint/parser": "~2.33.0",
    "@vue/cli-plugin-babel": "~4.4.0",
    "@vue/cli-plugin-eslint": "~4.4.0",
    "@vue/cli-plugin-typescript": "~4.4.0",
    "@vue/cli-service": "~4.4.0",
    "@vue/eslint-config-prettier": "~6.0.0",
    "@vue/eslint-config-typescript": "~5.0.2",
    "eslint": "~6.7.2",
    "eslint-plugin-prettier": "~3.1.3",
    "eslint-plugin-vue": "~6.2.2",
    "prettier": "~1.19.1",
    "typescript": "~3.9.3",
    "vue-template-compiler": "~2.6.11"
  }
}

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