https://www.carestreamdental.com/Content/web-kore-sdk/libs/anonymousassertion.js

1var bind = _.bind;
2/*
3validates the claims and returns the access token for this session.
4*/
5function koreAnonymousFn(options) {
6	console.info("anonymous user login");
7	/*
8     generates the UUID for anonymous user.
9    */
10	function koreGenerateUUID() {
11		console.info("generating UUID");
12		var d = new Date().getTime();
13		if (window.performance && typeof window.performance.now === "function") {
14			d += performance.now(); //use high-precision timer if available
15		}
16		var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
17			var r = (d + Math.random() * 16) % 16 | 0;
18			d = Math.floor(d / 16);
19			return (c == 'x' ? r : (r & 0x3 | 0x8)).toString(16);
20		});
21		return uuid;
22	}
23
24	var korecookie = localStorage.getItem("korecom");
25	var uuid = (korecookie) || koreGenerateUUID();
26
27	localStorage.setItem("korecom", uuid);
28
29	if (!options.clientId) {
30		console.log("clientId should be there for anonymous user");
31		return;
32	}
33	var assertion = {};
34	assertion.issuer = options.clientId;
35	assertion.subject = uuid;
36
37	options.assertion = assertion;
38
39	this.options = options;
40	this.claims = options.assertion;
41	this.WebClient = new this.clients.KoreWebClient({}, this.options);
42	this.WebClient.claims = this.claims;
43	this.WebClient.anonymouslogin.login({
44		"assertion": options.assertion,
45		"botInfo": this.options.botInfo
46	}, bind(this.onLogIn, this));
47
48}