adQuery QiD
The adQuery QiD is a first-party identifier designed for publishers using the Adquery adapter. For more information please contact prebid@adquery.io
adQuery QiD Configuration
First, add the adQuery QiD module to your Prebid.js build:
gulp build --modules=userId,adqueryIdSystem
Then configure the qui in your userSync configuration:
pbjs.setConfig({
    userSync: {
        userIds: [{
            name: 'qid',
            storage: {
                name: 'qid',
                type: 'html5',
                expires: 365,
            }
        }]
    }
});
This will add a userId.qid property to all bidRequests. This will be read by the Adquery bid adapter, and any other adapters that support EIDs:
{
  qid: 'p9v2dpnuckkzhuc92i'
}