WPG Big Data Era! Arrest Operation! Disguise Shot Dead? A Word Comes True!

Although Park Jeong-sul and Choi Cheol-su had been cautious enough, they had still overlooked one thing: modern society was an age of big data.

The house had been burned down, the vehicle had been burned down, and even the temporary phones had been burned. But their mistake was carrying their own phones.

As long as they carried their own phones, that was the biggest problem!

Every phone was essentially a high-precision GPS and mobile-network positioning device. Phones connected to a network, in particular, could be easily pinpointed with precision.

This so-called "connection to a network" was not what ordinary people assumed—turning on "mobile data"—but connecting to the voice communications network.

Simply put, whenever a phone had a signal, it was connected to the voice communications network.

When a phone emitted electromagnetic waves and exchanged data with an operator's signal base station, it could be located through that base station. At the same time, it could precisely mark where the corresponding user had been.

That was also the technical principle behind using mobile signals to check travel records.

While tracking the signals of the two large drones, the Koria National Security Service had traced them to relatively specific locations. Even though no relevant clues could be found through an investigation there, confirming the locations was enough.

The next step was screening mobile network signals through the telecommunications operators.

A mobile operator could easily determine how many phone signals had appeared at a given time and location, what the corresponding numbers were, and the identities of those numbers' registered holders.

Since Park Jeong-sul and Choi Cheol-su had changed locations twice in a short period, and both locations had been identified by the Koria National Security Service, the telecommunications operators quickly narrowed it down to four numbers through comparison.

Those four numbers had