What is a digital footprint?
A digital footprint is the trail of data you leave when you use the internet. It is like footprints in wet sand, except the internet sand does not dry away.
- Active footprint: data you share on purpose. Examples: a post, a comment, a form you fill, an email.
- Passive footprint: data collected without you noticing. Examples: cookies, your IP address, location, the pages you visit.
Why care? Colleges and companies may search your name. Old posts can be screenshotted and shared even after you delete them. So think before you post.
Net etiquette (netiquette)
Netiquette means good manners on the internet. Three simple rules:
- Be ethical: no copyright breaking, share only true information.
- Be respectful: respect privacy, do not post someone's photo without asking, disagree politely.
- Be responsible: no spam, no trolling, do not feed trolls, avoid writing in ALL CAPITALS (it feels like shouting).
Communication and social media etiquette
In email and chat, be clear and short, use a proper subject line, and do not forward chain messages. On social media, check facts before sharing, use privacy settings and think about who can see your post.
Data protection
Personal data is anything that can identify you: name, phone number, Aadhaar, address, photos, bank details. Sensitive data such as health or money details needs extra care.
Data protection means keeping this data safe from misuse. How?
- Use strong, different passwords and two-step (OTP) login.
- Share the least data needed; read app permissions.
- Use only secure
httpssites for payments; log out on shared computers.
In India, the Digital Personal Data Protection Act, 2023 says companies must take your consent and keep your data safe.
Intellectual property rights (IPR)
Intellectual property is a creation of the mind: a story, a song, code, a design, an invention or a brand name. IPR are legal rights that let the creator control and earn from it.
- Copyright ยฉ: protects creative work such as books, music, films, software code. It is automatic when the work is made.
- Patent: protects a new invention; others cannot make or sell it without permission for a set time (usually 20 years). It must be applied for.
- Trademark โข / ยฎ: protects a brand name, logo or symbol that identifies a company's goods.
Violation of IPR
Breaking these rights is called infringement: using copyrighted work without permission, copying a patented idea, or using a similar logo to fool buyers.
Plagiarism
Plagiarism means presenting someone else's work or ideas as your own without giving credit. Copy-pasting a paragraph from a website into your project without naming the source is plagiarism, even if the material is free.
How to avoid it: write in your own words, put exact words in quotation marks and name the source, keep a list of references.
Licensing and copyright
A licence is a legal permission from the owner that says what you may and may not do with a work.
- Proprietary licence: you pay to use; the source code is closed; you cannot copy or change it. Example: MS Windows, MS Office.
- Creative Commons (CC): used for pictures, text, music. CC BY means use freely but give credit; other options add rules like non-commercial (NC) or share-alike (SA).
- GPL (General Public License): a copyleft licence: you may use and change the code, but your changed version must also stay open under GPL.
- Apache licence: a permissive licence: use, change and even sell, keeping the notice.
Free and Open Source Software (FOSS)
FOSS is software whose source code is open and which gives four freedoms: use it for any purpose, study how it works, change it, and share copies. 'Free' here means freedom, not just zero price.
Examples: Linux (Ubuntu), LibreOffice, Mozilla Firefox, Python, MySQL, GIMP, VLC.
Why use FOSS? Low or no cost, can be changed for local needs (for example Indian languages), large helping community, fewer lock-ins.
Key formulas and definitions
- Digital footprint = active (you share) + passive (collected)
- IPR = Copyright (creative work) + Patent (invention) + Trademark (brand)
- Plagiarism = using someone's work without credit
- FOSS = four freedoms: use, study, change, share
- GPL = copyleft; Apache = permissive; CC BY = give credit
Worked examples
1. Sort these into active and passive footprint: (a) a YouTube comment, (b) cookies saved by a shopping site, (c) filling an online form, (d) your location tracked by a map app.
Active: (a) and (c), because you share them on purpose. Passive: (b) and (d), because they are collected quietly.
2. Aman copies two paragraphs from a blog into his project and adds no source. Later he adds quotation marks and the blog link. What was wrong first, and is it fine now?
First it was plagiarism: he showed the blog writer's words as his own. After adding quotation marks and the source, he gives credit, so it is acceptable use of a short quote.
3. Which IPR protects each: (i) a new type of solar cooker, (ii) the logo of a sports brand, (iii) a Python game you wrote?
(i) Patent (invention). (ii) Trademark (brand logo). (iii) Copyright (software code is a creative work).
4. A company takes GPL code, improves it and wants to sell it as closed software. Is that allowed?
No. GPL is copyleft: anyone who shares a changed version must share it under GPL with the source code open. They may charge money, but they cannot close the code.
Common mistakes
- Thinking deleting a post removes it forever. Copies, screenshots and backups may remain.
- Thinking 'free software' only means zero price. In FOSS, free means freedom to use, study, change and share.
- Mixing up patent and copyright. A patent is for an invention; copyright is for creative work like books, songs and code.
- Thinking that content found on the internet is free to copy. It is still copyrighted unless the licence says otherwise; always give credit.