When it comes to biometric identification, fingerprints are the most widespread and trusted technology. Yet they only contain a few dozen data points to link to your ID. Irises, in contrast, have around 2000 points of reference - enough to uniquely identify every person on Earth. Many companies have developed the means to take an iris scan and use these reference points to match them quickly to a database of scans.
This makes me believe GRI's implementation in Leon is eventually going to exceed anything we've seen before. Every other means of access (license, credit card, keys, etc) has the potential of being augmented or replaced by iris and face scanning. Get on a bus, pass security on the way into work, pay for a meal, order packages online - all without using anything besides your eye. The Leon project could make this futuristic world appear in just 3 to 5 years. That's incredible.