Combination Math

Mechanical locks have been around since ancient Egypt, with the oldest known artifact found in the ruins of Nineveh, an ancient city in Assyria, Mesopotamia, which is just across the Tigris River from what is now Mosul, Iraq. It was a forerunner to our modern-day pin tumbler ...more

SCRABBLE. To some it's just a game, but to me it's life or death. Well, not really, but it feels that way anyway. On a normal weekend, a game becomes much like Jon Thomas' "friendly game of death Scrabble." Video: . When I'm playing a game of SCRABBLE, my friends are not frien ...more

This method is easy, intuitive and requires very little math. You will need: Any flat flexible sheet material (ex. paper plates for this how-to) Pencil or pen Scissors Stapler, tape, glue or fasteners Ruler or straight edge Protractor Flatten Plates Flatten the paper plate ...more

If you have any doubt about how secure that strong password you created really is, there's an easy way to check online. Just visit HowSecureIsMyPassword.net, which uses a combination of math and statistics to determine how long it would take for a PC to crack your password. It ...more

Sometimes an iDevice is best used for idle, pointless fun. Today's segment of Making Art on Your iOS Deviceis a mixed bag of time-wasting cool effects and random, but useful art-making tools. Below, 10 apps for creating anything from erratic hand-shaken digital effects to your ...more

Following the first part in this series on advanced cracking techniques, we are going to go over how we can intelligently crack passwords using the old-fashioned bruteforce method. These unique cracking techniques aren't widely used, because most crackers are Script Kiddies wh ...more

As per Alex's request, I am posting about generating word-lists in Python. However, this is my FIRST attempt with Python, so please provide me with critiques and any and all comments. I really want to know what you think as there was a little bump here and there seeing as I a ...more

WonderHowTo is made up niche communities called Worlds. If you've yet to join one (or create your own), get a taste below of what's going on in the community. Check in every Wednesday for a roundup of new activities and projects. This week: A double exposure cell phone photog ...more

Curve stitching is a form of string art where smooth curves are created through the use of straight lines. It is taught in many Junior High and High School art classes. I discovered it when my math students started showing me the geometric art they had created. The process of ...more

WonderHowTo is made up niche communities called Worlds. If you've yet to join one (or create your own), get a taste below of what's going on in the community. Check in every Wednesday for a roundup of new activities and projects. This week: A nostalgia-themed cell phone photo ...more

A game labeled as 'educational' usually spells its death among hardcore gamers. The educational game genre is mostly intended for children, and games that appeal to children often lack the sort of widespread appeal that makes them commercially successful. Many people play gam ...more

Using only a circle and straight lines, it's possible to create various aesthetic curves that combine both art and mathematics. The geometry behind the concentric circle, ellipse, and cardioid dates back centuries and is easily found in the world around us. From an archery tar ...more

In our media-enriched world, past and present, SCRABBLE has made a name for itself, whether deliberately, subconsciously, or influentially. You may have a read a book that had the popular word game within a chapter, watched a movie that showed your favorite characters bringing ...more

Apparently it is possible to reduce 64,000 possible Master Lock padlock combinations down to just 100. The entire process is clearly illustrated in the below how-to from Mark Edward Campos. For an enlarged version, click here. Looking for something a little more interactive? W ...more

Whether you're a secret spy or just a regular person with a few secrets, you may want to keep certain information on your smartphone private, and it's totally possible on Android to do so. Previously, we showed off an app called Smart Hide Calculator that lets you hide apps/p ...more

Let's say you forgot the code to your Master Lock combination padlock. What can you do besides buy another one? Well, there's a surprising abundance of ways to open a combination lock other than with just the combination, some of which will even let you reset the code. Of cour ...more

A group of researchers from Stanford University and Princeton University has put together the largest RGB-D video dataset to date with over 1,500 scans of over 700 different locations across the world, for a total of 2.5 million views. This dataset, called ScanNet, has been s ...more

2 + 2 = 4. That's about as much math as I can handle without a calculator on a daily basis. I literally hate doing math more than anything in life, mostly because I'm not good at it—and I hate doing things I'm not good at. So, when I come across a cool math trick online that ...more

A rainbow table can be thought of like a dictionary, except instead of words and their definitions, it holds combinations of characters on one side and their hashed form on the other. What is a hash and why would you want to know what random combinations of characters are hash ...more

In a previous tutorial, we were able to measure vertical surfaces such as walls, books, and monitors using ARKit 1.5. With the advent of vertical plane anchors, we can now also attach objects onto these vertical walls. In this tutorial, you'll learn how to make your augmented ...more

Nvidia's decades-long development of graphics processor units (GPU) for PCs has given it a major leg up in the driverless space. Lead by charismatic founder and CEO Jensen Huang, Nvidia has recently extended its engineering knowhow to add neural networks for machine to its GP ...more

Hello people again, I wrote my last post about crypto about 10 months ago, now I will introduce something not fresh for the science, but fresh for the people who wants to learn. In my http://null-byte.wonderhowto.com/forum/cryptography-0161538/ post of crypto concepts, there i ...more

My bathroom is like my own private arcade room. Whenever I'm seated comfortably on the toilet, no one is going to disturb me, so I can play anything I want on my smartphone. You probably do it, too — and your parents, kids, friends, colleagues, and boss — so don't be afraid to ...more

One of the biggest problems in data security is authentication of data and its source. How can Alice be certain that the executable in her inbox is from the venerable Bob, and not from the not-so-venerable Oscar? Clearly Alice wants to know because if this file is actually sen ...more

You may not know it, but the IPv4 address of your computer contains tons of useful information about whatever Wi-Fi network you're on. By knowing what your IPv4 address and subnet mask are telling you, you can easily scan the whole network range, locate the router, and discove ...more

There has been significant debate over law enforcement's right to access our digital devices in recent years. New tools from Grayshift and Cellebrite are popping up faster than ever to help government agencies, as well as traditional hackers, break into iPhones. If you're conc ...more

Format strings are a handy way for programmers to whip up a string from several variables. They are designed to save the programmer time and allow their code to look much cleaner. Unbeknownst to some programmers, format strings can also be used by an attacker to compromise the ...more

Hello, budding augmented reality developers! My name is Ambuj, and I'll be introducing all of you Next Reality readers to the world ARKit, as I'm developing an ARKit 101 series on using ARKit to create augmented reality apps for iPad and iPhone. My background is in software en ...more