Commit d8151e68 authored by Greg Johnson's avatar Greg Johnson
Browse files

Image correction

parent 78acf4db
......@@ -31,6 +31,7 @@ Keys and locks have taken many forms over the centuries. Today, physical keys ar
Keys and locks appeared in human history about 6,000 years ago. The first simple wooden ["pin tumbler" lock](https://en.wikipedia.org/wiki/Pin_tumbler_lock) used small pins hidden near the bolt along with a wooden key that raised the pins allowing the latch to open. Though the pin tumbler design is still in heavy use even today, there were some flaws in the original design, otherwise we'd still be using them. For example, the wooden components were very easy to open with brute force to name one.
![Egyption Lock](./images/egyption-lock.jpg)
Between then and now, we've employed different materials to make keys and locks, changed their shape, design, and even their size. We've even done away with physical keys completely, resulting in a heavy dependence on multiple forms of digital keys.
### The shape of modern keys
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