What is Web Fingerprinting?

Web Finger printing is something that lets us to uniquely identify a browser execution which in case if to be done on an non logged in environment.

Usual sources for web finger printing are


    User Agent
    HTTP_ACCEPT Headers
    GEO-ip

There is an express middleware which is helping to implement the finger printing and it is like below

var Fingerprint = require('express-fingerprint')

app.use(Fingerprint({
    parameters:[
        // Defaults
        Fingerprint.useragent,
        Fingerprint.acceptHeaders,
        Fingerprint.geoip,

        // Additional parameters
        function(next) {
            // ...do something...
            next(null,{
            'param1':'value1'
            })
        },
        function(next) {
            // ...do something...
            next(null,{
            'param2':'value2'
            })
        },
    ]
}))

app.get('*',function(req,res,next) {
    // Fingerprint object
    console.log(req.fingerprint)
})


References:
https://www.npmjs.com/package/express-fingerprint