Some signals are data patterns uncovered in the trillions of searches that Google has handled over the years.
Mr. Elbaz is also an investor in Kaggle, which awards cash for finding data patterns.
The system, called Rosenbluth Exchange, lets companies post their travel policies, travel data patterns and areas where they seek volume discounts, and allows suppliers to bid for the business.
She also said Google is already experimenting with exploring data patterns in searches, so it can try and detect what a user meant to search for, even if they didn't type it.
The data patterns built up by tracking vehicle movements, credit-card use, phone calls and contact matching produce a sophisticated and almost infinitely subtle tool for monitoring and predicting behaviour.
He compares it to Minority Report, the film in which Tom Cruise plays a futuristic cop able to use data patterns to predict crimes and stop them before they happen.
A crucial challenge for the team, which has been working on this project since 2003, has been to find the materials and techniques so that smaller holograms reflect enough light for their data patterns to be detected and retrieved.
The data patterns derived from the first two experiments are both surprising and alarming.
Both the output and input data patterns have been observed in DSO for further verification.
However, data patterns and effect sizes were consistent with the original analysis.
Figure 5 shows the way that we used to find similar data patterns.
