in source/backend/rekognize-face-lambda/function.py [0:0]
def update_item(face_id, similarity):
ts = int(time.time())
dynamodb.update_item(
TableName=DYNAMODB_TABLE_NAME,
Key={'RekognitionId': {'S': face_id}},
UpdateExpression="SET GatePassed = :ts",
ExpressionAttributeValues={':ts':{'S': str(ts)}}
)