JKCTech

Jeffrey Koopman

Software Developer / Ethical Hacker / Freelancer

I am a 22 year old developer based in Den Helder, The Netherlands.
Currently I am attending Codam Coding College to become a 42 Network certified software engineer.
I like experimenting with electronics and I'm always looking for a new challenge!

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Spotting & Photography

Model Building

Featured Projects

112Centraal

Realtime notifications from the Dutch emergency services and aviation radar.

23-10-2019

Spark125

Free and open source software for Uniden Bearcat 125 series scanners

28-03-2022

Zalgo Text Generator

Create zalgo text to mess with your friends.

22-08-2018

Speedtest Faker

Generate fake Speedtest results, hosted on the real Speedtest website.

27-03-2018

Manual KIX Decoder

Manually decode KIX barcodes used by PostNL

28-03-2022

WiiHero

Custom Arduino and C# based project to play Guitar Hero on Windows.

15-02-2020

More Projects

Latest Blog Posts

Detecting Police Presence?

Detecting the presence of emergency services by radio signals.

22-04-2022

Tracking Planes on Twitter

How I made a bot tracking Max Verstappen's private jet on Twitter

21-04-2022

Impact with F12

How I injected a custom highscore in a minigame from NS called "Impact With Your Code".

13-04-2022

Telegram Trilateration

Proof of concept for abusing Telegram's "People Near Me" feature and tracking people's location.

17-02-2022

Logo Workshop

A (Dutch) mini-workshop in LOGO for teenagers comissioned by Codam.

01-08-2021

Getting Started With Arduino

A short crash course into electronics and Arduino! Comissioned by Codam

27-01-2020

More Blogposts

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