Concerns are raised about the method of associating surrounding devices with ultrasonic waves and associating them with individuals
In the present age, various devices are "connected" with the Internet, but by using ultrasonic waves which can not be heard by human ears newly, it is possible to collect multiple terminals such as smart phones, televisions, PCs etc. owned by individuals Technologies to put together are beginning to be used, and problems related to privacy are raised.
Beware of ads that use inaudible sound to link your phone, TV, tablet, and PC | Ars Technica
In this technology, a mechanism to reproduce the sound of advertisement of TV and the mechanism of reproducing ultrasonic wave having high frequency which can not be heard by a human's ears is embedded in a specific website, and the user watched the TV commercial or visited the site Sometimes I play that sound. Even in situations where it seems that nothing is happening to humans, smartphones and tablet terminals recognize the sound, use the browser's cookie mechanism to link individuals and multiple devices, to see what kind of commercials they saw, It will lead to tracking all the actions of how long you have seen the advertisement and what action the user took and what you bought as a result of seeing the advertisement.
like this"Cross device tracking(Tracking across devices) "causes privacy concerns,Center for Democracy & Technology(Center for democracy and technology:CDT) Is an AmericanFederal Trade CommissionAgainst(PDF)Written opinionI submitted it on October 16, 2015. The committee holds a workshop on this matter and is planning to consider the problematic technology.
The CDT says about this issue: "When a person tries to do some transaction, each terminal generates a separate data stream about his / her preference and behavior.Cross device tracking provides individuals who are marketing an individual By integrating the data streams by connecting the terminals possessed by them, by making the information about the individuals in a lumpGranularityIt makes it possible to make it in a high state of "It points out in the document.
ByPorter Novelli Global
CDT also cites the specific company name that uses such technology. Companies such as "SilverPush", "Drawbridge" and "Flurry" incorporate the cross-device tracking method, and furthermore, the use of ultrasonic waves is not mentioned, but "Adobe" is similar technology development It is believed to be doing. Among them, CDT is paying attention to SilverPush, but the company has not responded to Ars Technica who asked about this matter by e-mail.
CDT also mentioned in writing that the marketing company of 10 companies already uses cross device tracking and that users can hardly notice this and that they opt out (refuse) We are citing the current situation that marketing companies are collecting surprisingly detailed personal data without being able to do so. In one example, a woman can track a series of actions that a woman examines signs of infection by sexual intercourse on a PC, a guidance on a nonprofit organization "National Family Planning Federation" on a smartphone, visits a pharmacy and returns home. We are introducing the situation.
Although there was a method of extracting information using ultrasound up to now, it seems to be said that it is necessary to treat cross / device tracking method across multiple terminals as a new concern material. In particular, it seems that there is no choice but to say that the situation that a wide range of information is gathered and notified by a user to a third party is more dangerous than before.