Hacker News: christianh

New comment by christianh in "Ask HN: What are you working on? (June 2026)"

christianh — Mon, 15 Jun 2026 04:43:54 +0000

I continue to work on Poser, an AI video analysis tool for skiers. Upload a ski video clip, get feedback. Detecting the pose was difficult, now I need to actually give the feedback which is a lot harder.

https://poser.pro.

New comment by christianh in "Ask HN: What are you working on? (May 2026)"

christianh — Mon, 11 May 2026 04:50:35 +0000

I’m building an AI Ski coach. Upload a video clip of your skiing, get feedback: https://poser.pro

I’d love any feedback!

It’s a lot of fun and ultimate nerdery for me :) I’m a ski instructor through the Austrian and Danish ski school systems, I studied physics, and I’ve been a developer the last 15 years.

New comment by christianh in "Ask HN: What Are You Working On? (April 2026)"

christianh — Mon, 13 Apr 2026 20:56:35 +0000

I’m working on https://poser.pro, a ski technique feedback tool for skiers that want to improve their skills.

How? The user (skier!) uploads a short ski clip to Poser, lets Poser analyze, and then gets their results.

For now, you get video outputs: head-tracking and skeleton overlay. I’ve built a a lot of extra stuff (animated 3D body, turn-detection, balance-, steering-, pressure-, and edging-metrics, etc.), I’m just not sure how to package it all to be useful. So as of this post, videos are what’s available.

I’m using Meta AI’s SAM3 Tracking and SAM3D Body for skier tracking and pose estimation. The heavy lifting happens in Runpod.

I’m a software developer, Bachelor and Masters in Applied Phyiscs, and a ski instructor in the Austrian and Danish ski schools. So I thought to combine all three passions in Poser!

New comment by christianh in "Amazon reveals first color Kindle, new Kindle Scribe, and more"

christianh — Thu, 17 Oct 2024 06:22:07 +0000

I’ve been wanting to have a color ereader for a while (e.g. when non-fiction books have charts, illustrations, and photos I want to see them as they appear in print) and I’ve been looking at Kobo and others. But I want access to buy books on Amazon easily.

It’s my understanding that you can’t easily get Amazon books onto anything else than Kindle, is that not true?

UX-Friendly Enumeration Protection in Ruby on Rails

christianh — Wed, 24 May 2017 18:46:25 +0000

Article URL: https://blog.cobalt.io/ux-friendly-enumeration-protection-in-ruby-on-rails-f52f29d01f46

Comments URL: https://news.ycombinator.com/item?id=14412416

Points: 2

# Comments: 0

New comment by christianh in "Ask HN: Who is hiring? (June 2016)"

christianh — Wed, 01 Jun 2016 22:54:23 +0000

Cobalt connects security researchers with modern companies who need their applications security tested. We're a small team with our platform built in Ruby on Rails – you'll have a lot of ownership, responsibility, and chances to learn. We'll do a quick video call, invite you onsite, you'll do a take-home task, we'll discuss the task together, then we decide.

Full stack Rails Developer: https://angel.co/cobalt-io/jobs/22885-full-stack-ruby-on-rai...

New comment by christianh in "I found Prezi's source code"

christianh — Tue, 03 Dec 2013 18:42:29 +0000

A simple option is CrowdCurity - reward programs as a service. Private or public, dollars or bitcoin payments - everything setup and managed for the companies.

https://www.crowdcurity.com/

Disclosure: I'm co-founder of CrowdCurity

Denmark's CrowdCurity Crowdsources Vulnerability Testing for Startups

christianh — Thu, 29 Aug 2013 13:03:26 +0000

Article URL: http://arcticstartup.com/2013/08/29/denmarks-crowdcurity-crowdsources-vulnerability-testing-for-startups

Comments URL: https://news.ycombinator.com/item?id=6295541

Points: 2

# Comments: 0

New comment by christianh in "“NASDAQ is owned.” Five men charged in largest financial hack ever"

christianh — Sat, 27 Jul 2013 21:02:59 +0000

Well maybe there's some light at the end of the tunnel: If hackers had an easier way to gain recognition and being rewarded when they discover vulnerabilities, I'm certain most would choose to disclose their findings rather than try selling them on the black market. I'm working on a startup right now, www.crowdcurity.com, where we want to let any site easily create a bug bounty program (similar to Google, Mozilla, Paypal, etc.) and thereby leverage testers around the world to find vulnerabilities; hopefully initiatives like this will strengthen the security of web apps and websites around the world.