Skip to main content

Historical Technology Books - 74 in a series - Cipher and secret letter and telegraph code, with Hogg's improvements (1884)

Historical Technology Books - 74 in a series - Cipher and secret letter and telegraph code, with Hogg's improvements (1884)

 

INTRODUCTION

This Secret Code may be used by any oue. It is so perfect that no message written by it can possibly be read without knowing the particular keyword us3d. In most of the Cipher systems a mere changing of the order of the alphabet, or certain signs for certain letters, has been used, and in consequence of the same letter being always represented by the same cipher, an expert could easily read any message. In this system the constant change ot cipher for every letter makes the message perfectly secret. By its use any number of persons may write the same message, and each be unintelligible save for those intended. It is very simple, and with ordinary care there can be no mistake or misunderstanding. Your message can be written in any language.

More infomation:
Publication date 1884, 2d ed.
Topics Cipher and telegraph codes.
Publisher New York, Van Nostrand
Collection dultcamericana
Digitizing sponsor Duke University Libraries
Contributor Nicholas Gessler
Language English

Comments

Popular posts from this blog

Microsoft release Outlook.com email services to replace Hotmail

Today Microsoft released its new email service Outlook.com to replace its Hotmail brand. This new streamlined Metro interface design looks good and functions well so far. You can use your existing Microsoft account to log in and then choose an email alias (i.e. douglaswelch@outlook.com) for your new email address. Here are several articles that discuss Outlook.com... Goodbye, Hotmail; Hello, Outlook.com [REVIEW]  Outlook Is a Completely New, Feature-Filled Webmail Service from Microsoft Go Get Your @Outlook Email Address Quick Before Someone Else Does I will post links to more articles and reviews as they appear.

Shared calendars are one part of an organized family

by Douglas E. Welch , techiq@welchwrite.com 206-338-5832 Reader/Listener Line As a parent with a school-age child, I often hear other parents bemoaning their disorganized existence. Along with the busy schedules of two working parents you might have art classes, karate classes, Little League, soccer and more. Add in more than one kid and organizing your life can quickly become a nightmare. This is exactly why one of my most important organizing devices is a shared calendar that reflects all the activities and events for everyone in the household...and I do mean everything. If someone -- is required to be somewhere -- at sometime, it goes into the calendar. If we are given a calendar that reflects all the events for a particular activity (say, Little League), all these events immediately go into the calendar, along with notations on whether we are providing the team snack, working in the snack bar, etc. Even events that occur anytime during the day, like family birthdays, and other rem...

Google Docs adds templates

I have started to move away from using Microsoft Office (Word, Excel, Powerpoint, etc) in favor of online tools like Google Docs . Even as a computer consultant, I find that I use probably less than 10% of the features in any of these projects. One feature I really like in Google Docs is the easy, online file sharing that also allows you to edit simultaneously with someone else. Today, Google Docs added some templates including business cards, brochures and more. At the moment, it looks like they are rolling out this feature over time, so you might not yet see the templates on your account. When available, you will find the templates under the New... menu item. From Open Loops ... Today, Google quietly rolled out a new feature for their Google Docs Applications: Templates! It's so new that it isn't even listed on the new features page at this time. When one opens their Google Docs account and chooses to start a new document, a new "From Template..." command is pre...