Authors: Paul den Hertog (Strategic advisor, SURF), Niels van Dijk (Trust & Security specialist, SURF), Klaas Wierenga (Chief Information & Technology Officer, GÉANT)
Date: July 2025
This paper was written within the framework of the DC4EU Large Scale Pilot. The DC4EU project is Co-funded by the European Union’s Digital Europe Programme under Grant Agreement no. 101102611
(VERY rought draft, still a work-in-progress)
Authentication and signing keys serve different purposes, especially on platforms like GitHub where code integrity and access control are crucial. Here's a comparison based on their functions and best practices:
@Jandalf I recently had to reset my System Integrity Protection settings (csrutil clear) and once again ran into this issue, where my Razer device was not recognized.
I have upgraded to macOS Big Sur 11.1, and I can confirm that the solutions by @avaddon and @rdabban, which had worked for me on 11.0, no longer work.
Manually loading the kernel extension (the kextload command) will display the error code 27 "Extension with identifiers com.razer.common.razerhid not approved to load. Please approve using System Preferences.", but no pop-up or "Allow" option would appear anywhere on the System Preferences.
Adding the Razer TeamID with the /usr/sbin/spctl kext-consent add R2H967U7J8 command showed me a pop-up, but with no "Allow" option, and no option to allow the kernel extension would appear in the System Preferences, so no good.
I finally managed to make it work by temporarily disabling System Integrity Protection (SIP), as follows:
| /* | |
| * Note: You need to build this script before use | |
| * Usage: | |
| * 1. Build by `swfitc scan_unused_selectors.swift` | |
| * 2. Run by `./scan_unused_selectors /path/to/yourMachO` | |
| * | |
| * How to locate MachO of your APP (`/path/to/yourMachO` in above example)? In your Xcod project navigator, you can find a folder `Products` | |
| * In that folder you can see your app (after any build) and right click on it -> "Show In Finder" | |
| * You can get your APP's location by drag it into your terminal. Say it's "/path/to/MyApp.app", your MachO path would be "/path/to/MyApp.app/MyApp" | |
| */ |
| // 1. Open the browser developper console on the network tab | |
| // 2. Start the video | |
| // 3. In the dev tab, locate the load of the "master.json" file, copy its full URL | |
| // 4. Run: node vimeo-downloader.js "<URL>" | |
| // 5. Combine the m4v and m4a files with mkvmerge | |
| const fs = require('fs'); | |
| const url = require('url'); | |
| const https = require('https'); |
This notes is written by Sheldon. You can find me with #iOSBySheldon in Github, Youtube, Facebook, etc.
Convert .mov/.MP4 to .gif
As a developer, I feel better to upload a short video when I create the pull request to show other viewers what I did in this PR. I tried .mov format directly got after finishing recording screen using Quicktime, however, gif offers preview in most web pages, and has smaller file size.
This is not limited to developer, anyone has this need can use this method to convert the files.
Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.
This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would
| Rank | Name | Bundle ID | Version | Min iOS Version | SDK Version | Uses Swift | Universal App | VC Based Status Bar Management | Xcode Version | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Candy Crush | com.midasplayer.apps.candycrushjellysaga1 | 1.6.5 | 6 | iphoneos8.0 | No | Universal | Global | 610 | |
| 2 | Piano Tiles 2 | com.cmplay.tiles2 | 1.1.7 | 7 | iphoneos9.2 | No | Universal | Global | 720 | |
| 3 | Messenger | com.facebook.Messenger | 52 | 7 | iphoneos9.1 | No | Universal | VC Based | 710 | |
| 4 | com.burbn.instagram | 7.13.1 | 7 | iphoneos9.1 | No | iPhone Only | VC Based | 710 | ||
| 5 | YouTube | com.google.ios.youtube | 10.49.13 | 7 | iphoneos8.4 | No | Universal | Global | 640 | |
| 6 | Snapchat | com.toyopagroup.picaboo | 9.21.1 | 7 | iphoneos9.0 | No | iPhone Only | Global | 701 | |
| 7 | Meltdown | com.robtop.geometrydashmeltdown | 1 | 6 | iphoneos9.1 | No | Universal | Global | 710 | |
| 8 | com.facebook.Facebook | 46 | 7 | iphoneos9.1 | No | Universal | Global | 710 | ||
| 9 | Netflix | com.netflix.Netflix | 7.2.4 | 7 | iphoneos9.0 | No | Universal | VC Based | 700 |
| let styles: [UIFont.TextStyle] = [ | |
| // iOS 17 | |
| .extraLargeTitle, .extraLargeTitle2, | |
| // iOS 11 | |
| .largeTitle, | |
| // iOS 9 | |
| .title1, .title2, .title3, .callout, | |
| // iOS 7 | |
| .headline, .subheadline, .body, .footnote, .caption1, .caption2, | |
| ] |