dwn

// create a profiling handle when page loaded
handle = dwn.start(config);

// collect fingerprint data blob, collect() is a promise
handle.collect().then(
    (fp_data) => {
        // if be sure profiling all done, stop profiling
        // otherwise not need to stop it
        handle.stop()
        // processing FP data blob, send it to API server ...
    },
    (error) => {
        // handle the error
    }
);

// collect fingerprint data blob, tryCollect() is NOT a promise will return a fingerprint data blob immediately
fp_data = handle.tryCollect()
// processing FP data blob, send it to API server ...

Methods

(static) collect()

Description:

• Collecting fingerprint data blob, it returns a Promise

Example

handle = dwn.start(config);
handle.collect().then(
    (fp_data) => {
        // fp_data is base64 fingerprint data string
    },
    (error) => {
        // handle the error
    }
);

(static) stop()

Description:

• Stopping profiling, only call it when collect() called and be sure all profiling done
  It will stop all biometrics event listeners
  It's ok if you don't call stop() at all

Example

handle = dwn.start(config);
handle.stop();
let fp_data = handle.tryCollect();

(static) tryCollect()

Description:

• Collecting fingerprint data blob, it returns fingerprint data string immediately

Example

handle = dwn.start(config);
let fp_data = handle.tryCollect();