Every click, search, purchase and app download leaves a digital trail. Whether you are shopping for trainers, reading the news or checking the weather, companies are collecting information about your online habits.
Some of that data helps websites remember your preferences or keep you signed in. Much of it, however, is used to build advertising profiles that can follow you across websites, apps and even different devices.
Many people are surprised to discover how much of this tracking happens quietly in the background. The good news is that you do not have to accept every form of data collection.
Modern smartphones, laptops and web browsers now include privacy controls that can reduce tracking without making everyday browsing difficult.
By understanding how online tracking works and knowing where to find the right settings, you can make informed decisions about who has access to your personal information and reduce the amount of data companies collect about you.
How Online Tracking Works And What Companies Actually Collect
The internet runs on data. Every time you visit a website, it can collect information including your IP address, approximate location, browser type, operating system, screen size and the pages you visit. Combined over time, this creates a detailed picture of your interests and habits.
One of the most common tracking tools is the cookie. Cookies are small files stored in your browser that help websites remember information about your visit.
First-party cookies are created by the website you are using and often improve your experience by keeping you logged in or remembering items in your shopping basket.
Third-party cookies, however, are usually placed by advertising or analytics companies and can follow your activity across many different websites.
Cookies are only one piece of the puzzle. Companies also use tracking pixels, advertising IDs on smartphones, browser fingerprinting and location data to identify users.
Browser fingerprinting is particularly difficult to avoid because it combines details such as your browser version, fonts, screen resolution and device settings to create a unique profile without relying on cookies.
This information is valuable because it allows advertisers to create personalised advertising profiles. If you search for holidays, visit airline websites and compare hotels, you may soon notice travel adverts appearing on social media, video platforms and news websites.
That does not necessarily mean someone is watching you individually. Instead, automated systems analyse your browsing behaviour and place you into advertising categories.
Smartphones add another layer of tracking. Apps often request access to your location, contacts, microphone, camera or photos. While many permissions are necessary for an app to function properly, others are optional and mainly used to improve advertising or collect usage data.
Studies examining thousands of Android and iPhone apps have found that third-party tracking remains common across both platforms.
The good news is that many companies now provide more transparency than they did a few years ago. Apple introduced App Tracking Transparency, requiring apps to request permission before tracking users across other apps and websites.
Google has also introduced new privacy controls within Android and Chrome, although users still need to enable many of them manually.
Privacy Settings You Can Change Today On Phones, Browsers And Laptops
Improving your online privacy does not require specialist software. A few changes can reduce the amount of information shared with advertisers.
On an iPhone, begin by opening Settings > Privacy & Security > Tracking. Turn off 'Allow Apps to Request to Track' if you do not want apps tracking your activity across other companies' apps and websites.
Next, open Settings > Privacy & Security > Location Services. Review every app individually and choose 'While Using the App', 'Ask Next Time' or 'Never' where appropriate. Disable Precise Location for apps that do not need your exact position.
Apple users should also visit Settings > Safari. Enable Prevent Cross-Site Tracking, consider hiding your IP address from trackers where available, and regularly review Safari's Privacy Report to see which trackers have been blocked.
Private Browsing also prevents your browsing session from being added to your history after you close it, although it does not make you anonymous online.
On Android, open Settings > Privacy and review Permission Manager. Remove unnecessary access to your location, microphone and camera. Then open Settings > Google > Ads or your device's privacy settings to reduce personalised advertising, depending on your Android version.
If you use Chrome on Android, open Chrome > Settings > Privacy and Security. Block third-party cookies where available, clear browsing data regularly and consider enabling the 'Do Not Track' request. While websites are not required to honour that request, it can still reduce tracking on some services.
Laptop users should also review their browser settings. In Chrome, Edge, Firefox and Safari, you can block third-party cookies, clear browsing history and cookies, restrict location access and manage website permissions. Browsers increasingly limit third-party cookies by default, reflecting growing concerns about online tracking.
Whenever a website displays a cookie consent banner, avoid clicking 'Accept All' automatically. If possible, choose 'Reject All' or disable optional advertising and analytics cookies while keeping only those required for the site to function properly.
It is also a good practice to keep checking app permissions every few months. Many people install an app, approve every request and never look again, even if their usage changes over time.
Finally, remember that privacy tools have limits. Private or Incognito mode prevents your browser from saving local history, but your internet provider, employer, school network and the websites you visit can still see your activity. Likewise, blocking cookies reduces one form of tracking but does not eliminate techniques such as browser fingerprinting.
The goal is not complete invisibility. For most people, that is unrealistic. Instead, reducing unnecessary permissions, limiting advertising identifiers, blocking third-party cookies and reviewing privacy settings regularly can greatly reduce the amount of personal information companies collect.
Taking ten minutes to adjust these settings across your phone, laptop and browser can leave advertisers with far less data than they would otherwise have gathered from you, while allowing you to continue using the internet much as before.
Frequently Asked Questions
- What is online tracking?Online tracking involves collecting data about your online activities to create advertising profiles.
- How can I reduce online tracking?Adjust privacy settings on your devices, block third-party cookies, and review app permissions regularly.
- What are cookies?Cookies are small files stored in your browser that help websites remember information about your visit.
- What is browser fingerprinting?Browser fingerprinting combines details like browser version and device settings to create a unique profile without cookies.
