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Q95 (IAS/2019) Science & Technology › ICT, AI, Cybersecurity & Emerging Tech › Sensors and wearable devices Official Key

In the context of wearable technology, which of the following tasks is/are accomplished by wearable devices? 1. Location identification of a person 2. Sleep monitoring of a person 3. Assisting the hearing impaired person Select the correct answer using the code given below.

Result
Your answer: —  ·  Correct: D
Explanation

The correct answer is option D (1, 2 and 3) because wearable devices accomplish all three tasks mentioned.

**Statement 1 is correct:** Wearable devices can determine the device's physical location and track customers or trigger location-based actions[1], enabling location identification of a person.

**Statement 2 is correct:** Modern sleep-tracking solutions, such as wearable devices (e.g., Fitbit and Apple Watch) provide real-time data on sleep patterns, WASO (wake after sleep onset), and sleep consistency[2]. Additionally, many wearable devices interact with smartphones and tablets via apps to track users' sleep, health,[3] and movement.

**Statement 3 is correct:** Button cells are used for hearing aids[4], indicating that wearable devices like hearing aids assist hearing-impaired persons. These compact, wearable assistive devices help those with hearing difficulties.

Since all three statements are correct, option D (1, 2 and 3) is the right answer.

Sources
  1. [1] https://www.viscardicenter.org/wp-content/uploads/2016/09/2016_NBDC_Guide_Wearable_Technology.pdf
  2. [3] https://www.viscardicenter.org/wp-content/uploads/2016/09/2016_NBDC_Guide_Wearable_Technology.pdf
  3. [4] Science-Class VII . NCERT(Revised ed 2025) > Chapter 3: Electricity: Circuits and their Components > SCIENCE AND SOCIETY > p. 40
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PROVENANCE & STUDY PATTERN
Guest preview
Don’t just practise – reverse-engineer the question. This panel shows where this PYQ came from (books / web), how the examiner broke it into hidden statements, and which nearby micro-concepts you were supposed to learn from it. Treat it like an autopsy of the question: what might have triggered it, which exact lines in the book matter, and what linked ideas you should carry forward to future questions.
Q. In the context of wearable technology, which of the following tasks is/are accomplished by wearable devices? 1. Location identification …
At a glance
Origin: Books + Current Affairs Fairness: Low / Borderline fairness Books / CA: 3.3/10 · 6.7/10
You're seeing a guest preview. The Verdict and first statement analysis are open. Login with Google to unlock all tabs.

This is a classic 'Observation-Based' Science question. While Statement 3 is hidden in a Class VII NCERT footnote, Statements 1 and 2 rely on your awareness of common gadgets (Smartwatches/Fitbits). The strategy here is not just reading books, but observing the features of the technology you see in daily life.

How this question is built

This question can be broken into the following sub-statements. Tap a statement sentence to jump into its detailed analysis.

Statement 1
Wearable technology: do wearable devices provide location identification or tracking of a person?
Origin: Web / Current Affairs Fairness: CA heavy Web-answerable

Web source
Presence: 5/5
"The identifier, and several bytes sent with it, can be used to determine the device's physical location, track customers, or trigger a location-based action"
Why this source?
  • Explicitly describes iBeacon (used with devices) and states an identifier can be used to determine a device's physical location.
  • Directly links wearable/connected-device proximity sensing to tracking customers and triggering location-based actions.
Web source
Presence: 4/5
"many interact with smartphones and tablets via apps to track users’ sleep, health, and movement."
Why this source?
  • Says common wearables interact with phones/tablets via apps to track users' sleep, health, and movement.
  • Tracking users' movement implies wearables can be used to monitor or follow a person's motion/location over time.
Web source
Presence: 3/5
"Many people use them to do things such as track steps-per-day or log miles jogged, or measure heart rate."
Why this source?
  • Describes wearables tracking steps-per-day, miles jogged and other activity data.
  • Activity and movement tracking can be used as part of identifying or monitoring a person's location or movements.

FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 1: Geography as a Discipline > 4. Regional Analysis > p. 9
Strength: 5/5
“transformed into computer cartography. Technology has enabled scholars to handle large quantum of data. The internet provides extensive information. Thus, the capacity to attempt analysis has increased tremendously. GIS has further opened vistas of knowledge. GPS has become a handy tool to find out exact locations. Technologies have enhanced the capacity of attempting synthesis with sound theoretical understanding. You will learn some preliminary aspects of these techniques in your book, Practical work in Geography – Part I (NCERT, 2006). You will continue to improve upon your skills and learn about their application.”
Why relevant

Explicitly states that GPS is a tool to find exact locations and that technology enables handling large geospatial data.

How to extend

A student could check whether common wearables include or access GPS modules (or use connected phones' GPS) to infer potential for location identification.

Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 12: Transport, Communications and Trade > Road Safety > p. 41
Strength: 5/5
“All the passenger buses and taxis are mandated to be fitted with GPS devices and panic buttons to enable real time tracking and interventions in times of crisis to enhance the safety of the passengers.”
Why relevant

States that passenger vehicles are fitted with GPS devices for real-time tracking and intervention, showing GPS use for live location tracking.

How to extend

By analogy, a student could ask whether wearables can host similar GPS/communication components to enable real-time tracking of a person.

Indian Economy, Vivek Singh (7th ed. 2023-24) > Chapter 11: Agriculture - Part II > Smart Farming > p. 359
Strength: 4/5
“These robots can also be used in harvesting and lifting. Heavy farming vehicles can also be navigated from the comfort of homes through phone screens to perform tasks and GPS can track their positions at every time.• Drones equipped with sensors and cameras are used for imaging, mapping and surveying the farms. They can be remotely controlled or they can fly automatically through software-controlled flight plans in their embedded systems, working in coordination with sensors and GPS. From the drone data, insights can be drawn regarding crop health, irrigation, spraying, planting, soil and field, plant counting and yield prediction and much more.• IoT based remote sensing utilizes sensors placed along the farms like weather stations for gathering data which is transmitted to analytical tool for analysis.”
Why relevant

Notes that GPS can track positions of farm vehicles and that drones use GPS with sensors for mapping and remote control.

How to extend

A student could extend this pattern to personal devices: if small devices (drones, vehicles) use GPS for location, small wearables plausibly could too; check device specs.

Indian Economy, Vivek Singh (7th ed. 2023-24) > Chapter 11: Agriculture - Part II > Application of Technology in Agriculture: > p. 357
Strength: 4/5
“• Artificial Intelligence can be used with historic weather data to predict the best time for sowing of seeds. With the help of historic data from the farms, AI can predict other stages of the farming process such as when to irrigate the field and apply fertilizers etc. to get the maximum yield with least input cost.• Farmers are also using AI to create seasonal forecasting models to improve agricultural accuracy and increase productivity. These models are able to predict upcoming weather patterns months ahead to assist decisions of farmers.• IoT-led devices with remote sensors can be placed at farms to record crop, soil, humidity, and weather conditions in real-time and the data collected by the device is harnessed using AI and ML to generate farm-specific, crop-specific, and crop-stage-”
Why relevant

Describes IoT-led devices with remote sensors that record real-time conditions and transmit data for analysis.

How to extend

A student could consider whether wearables are IoT devices that transmit sensor data (including location) via networks to enable tracking.

Understanding Economic Development. Class X . NCERT(Revised ed 2025) > Chapter 4: GLOBALISATION AND THE INDIAN ECONOMY > Containers for transport of goods > p. 62
Strength: 3/5
“Even more remarkable have been the developments in information and communication technology. In recent times, technology in the areas of telecommunications, computers, Internet has been changing rapidly. Telecommunication facilities (telegraph, telephone including mobile phones, fax) are used to contact one another around the world, to access information instantly, and to communicate from remote areas. This has been facilitated by satellite communication devices. As you would be aware, computers have now entered almost every field of activity. You might have also ventured into the amazing world of internet, where you can obtain and share information on almost anything you want to know.”
Why relevant

Highlights rapid developments in telecommunications, mobile phones, Internet and satellite communication enabling remote contact and information access.

How to extend

Using this, a student could reason that wearables connected to mobile/satellite networks might convey location data for identification or tracking.

Statement analysis

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Statement analysis

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