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I built KD Screen Guard: A zero-dependency, tamper-resistant lock screen overlay with WebAuthn biometrics & intruder camera capture
Most JavaScript screen lock libraries simply hide the UI.
If someone removes an overlay through DevTools or tampers with the DOM, the "security" often disappears. That approach isn't enough for applications handling sensitive enterprise data.
I wanted to build something significantly more resilient.
🚀 Today I'm excited to release **kd-screen-guard (v1.0.1)** on npm.
It's a zero-dependency, tamper-resistant screen security library for Vanilla JavaScript, React, and Vue 3, designed to protect sensitive user sessions during inactivity.
Some of the engineering behind it:
🔐 PBKDF2 (100,000 iterations) for secure key derivation.
👆 Native WebAuthn authentication (Touch ID, Face ID, Windows Hello & YubiKey).
📷 Automatic WebRTC intruder snapshots when security violations are detected.
⚡ Cryptographic operations running inside Web Workers to keep the UI responsive.
🛡️ Self-healing DOM MutationObserver protection against overlay tampering.
Building this project required combining browser cryptography, WebAuthn, WebRTC, Web Workers, accessibility, and client-side security mechanisms into a single lightweight package with **zero external dependencies**.
If you're building enterprise dashboards, admin panels, healthcare, finance, or any application where unattended sessions are a security concern, I'd love to hear your feedback.
🔗 Live Demo:
https://khvichadev.github.io/kd-screen-guard/demo/
📦 npm:
https://www.npmjs.com/package/kd-screen-guard
🐙 GitHub:
https://github.com/KhvichaDev/kd-screen-guard
Feedback, ideas, and contributions are always welcome.
\#JavaScript #TypeScript #CyberSecurity #WebDevelopment #ReactJS #VueJS #OpenSource #npm #WebAuthn #KhvichaDev
#technology #js #programming #dev
Most JavaScript screen lock libraries simply hide the UI.
If someone removes an overlay through DevTools or tampers with the DOM, the "security" often disappears. That approach isn't enough for applications handling sensitive enterprise data.
I wanted to build something significantly more resilient.
🚀 Today I'm excited to release **kd-screen-guard (v1.0.1)** on npm.
It's a zero-dependency, tamper-resistant screen security library for Vanilla JavaScript, React, and Vue 3, designed to protect sensitive user sessions during inactivity.
Some of the engineering behind it:
🔐 PBKDF2 (100,000 iterations) for secure key derivation.
👆 Native WebAuthn authentication (Touch ID, Face ID, Windows Hello & YubiKey).
📷 Automatic WebRTC intruder snapshots when security violations are detected.
⚡ Cryptographic operations running inside Web Workers to keep the UI responsive.
🛡️ Self-healing DOM MutationObserver protection against overlay tampering.
Building this project required combining browser cryptography, WebAuthn, WebRTC, Web Workers, accessibility, and client-side security mechanisms into a single lightweight package with **zero external dependencies**.
If you're building enterprise dashboards, admin panels, healthcare, finance, or any application where unattended sessions are a security concern, I'd love to hear your feedback.
🔗 Live Demo:
https://khvichadev.github.io/kd-screen-guard/demo/
📦 npm:
https://www.npmjs.com/package/kd-screen-guard
🐙 GitHub:
https://github.com/KhvichaDev/kd-screen-guard
Feedback, ideas, and contributions are always welcome.
\#JavaScript #TypeScript #CyberSecurity #WebDevelopment #ReactJS #VueJS #OpenSource #npm #WebAuthn #KhvichaDev
#technology #js #programming #dev
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career advice for new java engineer
Hello! My background is in data science and machine learning, which I am truly passionate about. However, I’ve encountered some challenges in software engineering, and I realize that to secure a position as a machine learning engineer at a reputable research lab, I will likely need at least a master's or doctoral degree.
As a result, I have decided to learn software engineering with Java. I already have some experience with the language, as I’ve used it in several projects focused on analytics and machine learning. In my graduate projects, I worked as a backend engineer, and I really enjoyed the process of system building.
Currently, I am reading a book titled "Core Java Vol. 12, Part I." I am eager to become proficient in Java, but I often have doubts about my path. I would greatly appreciate any advice from someone who is new to Java and aims to be a successful software engineer. Thank you!
#dev #programming #technology
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Hello! My background is in data science and machine learning, which I am truly passionate about. However, I’ve encountered some challenges in software engineering, and I realize that to secure a position as a machine learning engineer at a reputable research lab, I will likely need at least a master's or doctoral degree.
As a result, I have decided to learn software engineering with Java. I already have some experience with the language, as I’ve used it in several projects focused on analytics and machine learning. In my graduate projects, I worked as a backend engineer, and I really enjoyed the process of system building.
Currently, I am reading a book titled "Core Java Vol. 12, Part I." I am eager to become proficient in Java, but I often have doubts about my path. I would greatly appreciate any advice from someone who is new to Java and aims to be a successful software engineer. Thank you!
#dev #programming #technology
source
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Check your site to see where you can replace your code with modern CSS
Paste any public URL and it opens the page in Chrome, explores its interactions, then checks the HTML, CSS, and JavaScript for things that browsers can now handle natively.
It catches patterns such as custom accordions, popovers, dialogs, scroll reveals, JavaScript sticky elements, and older CSS workarounds.
The report includes the code it found, a proposed replacement, browser support, what to verify before changing anything, and a small example towards a codepen to implement it.
It scans ONE page, so it is not a performance, accessibility, security, or full-site audit.
It is free (10 url/day/human) and requires no account.
Don't hesitate to tell me if you find a bug, an UI/UX issue, or any other thing you find weird
#dev #technology #programming
Paste any public URL and it opens the page in Chrome, explores its interactions, then checks the HTML, CSS, and JavaScript for things that browsers can now handle natively.
It catches patterns such as custom accordions, popovers, dialogs, scroll reveals, JavaScript sticky elements, and older CSS workarounds.
The report includes the code it found, a proposed replacement, browser support, what to verify before changing anything, and a small example towards a codepen to implement it.
It scans ONE page, so it is not a performance, accessibility, security, or full-site audit.
It is free (10 url/day/human) and requires no account.
Don't hesitate to tell me if you find a bug, an UI/UX issue, or any other thing you find weird
#dev #technology #programming
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Developer Productivity at a Developer Productivity Startup • Robert-Jan "RJ" Huijsman
#programming #technology #dev
#programming #technology #dev
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Dubbio veloce di architettura/stile con le classi JS
​
Nel mio motore 2D sto sistemando i componenti UI (tipo BeeButton) e mi è venuto un dubbio su come passare le coordinate al super().
Opzione A (Oggetto opzione)
\\\\\\\`\\\\\\\`\\\\\\
super({ x, y, width, height });
\\\\\\\`\\\\\\\`\\\\\\\`
Opzione B (Parametri singoli standard):
\\\\\\\`\\\\\\\`\\\\\\\`
super( x, y, width, height );
\\\\\\\`\\\\\\\`\\\\\\\`
Voi quale preferite usare nei vostri progetti e perché? Meglio la flessibilità dell'oggetto o la pulizia dei parametri singoli?(Se usate soluzioni alternative tipo super(position, size) fatemelo sapere nei commenti!).
#dev #programming #technology #js
​
Nel mio motore 2D sto sistemando i componenti UI (tipo BeeButton) e mi è venuto un dubbio su come passare le coordinate al super().
Opzione A (Oggetto opzione)
\\\\\\\`\\\\\\\`\\\\\\
super({ x, y, width, height });
\\\\\\\`\\\\\\\`\\\\\\\`
Opzione B (Parametri singoli standard):
\\\\\\\`\\\\\\\`\\\\\\\`
super( x, y, width, height );
\\\\\\\`\\\\\\\`\\\\\\\`
Voi quale preferite usare nei vostri progetti e perché? Meglio la flessibilità dell'oggetto o la pulizia dei parametri singoli?(Se usate soluzioni alternative tipo super(position, size) fatemelo sapere nei commenti!).
#dev #programming #technology #js
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What should I do: learn gdscript or learn python
I’m also very new to coding/programming
#programming #technology #dev
I’m also very new to coding/programming
#programming #technology #dev
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I made a DNS propagation checker that shows the 24 sources as a box of donuts
https://donutdns.com https://donutdns.com/
It queries \~20 geographic vantage points (Google DoH + EDNS Client Subnet) and four public resolvers in parallel, one donut per source. Full box means every source agrees. Empty holes are the ones still serving your old record.
There's a normal grid view too if you just want to read values. Built it because I kept refreshing whatsmydns during migrations.
#dev #programming #technology
https://donutdns.com https://donutdns.com/
It queries \~20 geographic vantage points (Google DoH + EDNS Client Subnet) and four public resolvers in parallel, one donut per source. Full box means every source agrees. Empty holes are the ones still serving your old record.
There's a normal grid view too if you just want to read values. Built it because I kept refreshing whatsmydns during migrations.
#dev #programming #technology
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Analyzing the Current Activity and Relevance of the Pawn Ecosystem in 2026
I have been observing the Pawn ecosystem lately and noticed it is far from inactive, with ongoing development of modern tools like a web-based Pawn Studio designed to replace the outdated Pawno editor, alongside projects such as PawnPlus which continue to receive updates, with version 1.5.3 released just a few months ago in February 2026. This activity seems to be driven largely by the SA-MP and Open.mp https://open.mp/ odding communities, with open.mp https://open.mp/ tself being actively maintained and improved, and the broader GitHub ecosystem showing dozens of public repositories related to Pawn and Open.mp https://open.mp/ . iven this context, I would like to ask whether the Pawn community, especially within the SA-MP and Open.mp https://open.mp/ cene, is still significant enough to consider the language actively relevant in 2026, or if this is primarily a legacy ecosystem with a concentrated but declining user base. I would be grateful to hear from developers who are currently working with Pawn about their experiences, whether modern tooling like Pawn Studio and PawnPlus have meaningfully improved development, and whether they are seeing new developers enter the scene or if the community is largely composed of seasoned veterans. Thank you for your thoughts.
#technology #programming #dev sGim
I have been observing the Pawn ecosystem lately and noticed it is far from inactive, with ongoing development of modern tools like a web-based Pawn Studio designed to replace the outdated Pawno editor, alongside projects such as PawnPlus which continue to receive updates, with version 1.5.3 released just a few months ago in February 2026. This activity seems to be driven largely by the SA-MP and Open.mp https://open.mp/ odding communities, with open.mp https://open.mp/ tself being actively maintained and improved, and the broader GitHub ecosystem showing dozens of public repositories related to Pawn and Open.mp https://open.mp/ . iven this context, I would like to ask whether the Pawn community, especially within the SA-MP and Open.mp https://open.mp/ cene, is still significant enough to consider the language actively relevant in 2026, or if this is primarily a legacy ecosystem with a concentrated but declining user base. I would be grateful to hear from developers who are currently working with Pawn about their experiences, whether modern tooling like Pawn Studio and PawnPlus have meaningfully improved development, and whether they are seeing new developers enter the scene or if the community is largely composed of seasoned veterans. Thank you for your thoughts.
#technology #programming #dev sGim
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Project Valhalla, real-talk... what is it?
For decades, Java's object model has powered one of the world's most successful programming languages. But the hardware we run on today looks very different from the world Java was born into in 1995.
Modern CPUs are incredibly fast, but memory access, cache locality, and object allocation have become some of the biggest performance challenges in software.
Project Valhalla is one of the most ambitious changes in Java's history. It isn't just about making Java faster... it's about rethinking what a Java object actually is.
#technology #programming #dev
For decades, Java's object model has powered one of the world's most successful programming languages. But the hardware we run on today looks very different from the world Java was born into in 1995.
Modern CPUs are incredibly fast, but memory access, cache locality, and object allocation have become some of the biggest performance challenges in software.
Project Valhalla is one of the most ambitious changes in Java's history. It isn't just about making Java faster... it's about rethinking what a Java object actually is.
#technology #programming #dev