Sandbox::https://mdp.github.io

about

Formerly mobile engineering at Twitter, CTO Snip.it (acquired by Yahoo!), and founding partner at Builders.vc. Now helping early stage companies build the products they want to build at 1984 Ventures

In my free time I like to travel, eat fearlessly, avoid traffic, work on open source projects, and violate terms of service agreements.

projects

ROTP - A Ruby gem for One Time Password, RFC 4226 compatible
U2F Demo and Debugger - Learn more about using U2F
AtlantaWaterMeter - Read your water meter with an SDR
qrterminal - QR Code Library for terminals
Other Github Projects - Check here for more up to date work

Contact

1984 Ventures » 1984.vc
Emailing » m@mdp.im
Coding » Github/mdp
Twittering » @mdp
Networking » LinkedIn Profile

Long Winded

17 Mar 2026 The kids are alright (and they'll probably still learn regex)
20 Jan 2025 Experience vs Innovation: Breaking Down the AI Coding Divide
13 Sep 2024 The Developer-Driven Success of Open Source
24 May 2024 Passkeys are a disaster, but One Time Passwords are worse
22 Mar 2024 Docker and Cgroups (Or how to avoid runaway CPU on limited systems)
15 Mar 2022 Just push to github (or how I stopped using personal access tokens)
28 Jun 2021 Encryption is not authentication
23 Feb 2021 Encryption isn't going to solve your RPA security issues
24 Apr 2019 You’re terrible at hiring — A startup’s guide to interviewing engineers
12 Dec 2017 Quick and dirty developer guide to U2F
29 Oct 2017 Prototyping in the age of NoSQL
13 Oct 2015 CSP in Express.js
17 Aug 2014 Tracking the mail with a $29.99 phone
25 Jun 2013 HTTPS Done Correctly
09 Jun 2013 Tumblr's shoehorned JS watches for dirty tricks
28 May 2013 Hacking HTTPS -> HTTP referrers
02 Apr 2013 curl directly to a gist
02 Mar 2013 Evernote doesn't really care about security
24 Feb 2013 Reworked my Gist importer for Evernote

MARK PERCIVAL

about

projects

Contact

Long Winded