GC-Codec 1.1

16.78 MB

Publisher Description

This is a utility app for geocache owners to create the Signature for the electronic log book. So far geocaches have been logged by writing the username into a little log book that was contained in the geocache container. This new idea of logging replaces the paper booklet by sending an SMS to the owner instead. The geocache container contains a little printout of a QR code instead of the log book. The QR code contains all necessary information to create the SMS. This app is used to create a electronic signature that is part of the QR string.

How to create the Signature with the GC-Codec App:

1) Enter your phonenumber with country code ("+4365012345678") in the field "Enter raw text" without ("")

2) Enter the GC code ("GC12345") as listed on the geocache website in the field "Enter key" without ("")

As result you get the Signature which is then used as last part for creating the QR code with the QR code generator.
How to create the QR code with the QR code generator:
The QR string to be entered in the QR code generator contains following information:
GC code,GC name,Latitude,Longitude,Signature
1) Use a QR code generator (http://goqr.me/de/)
2) The QR code must contain following fields separated by commas without spaces around the commas and without (""):
a) GC code ("GC12345"), as listed on the geocache website
b) GC name ("The name of your GC"), as listed on the geocache website
c) Latitude ("N(S)DD:MM.MMM") as listed on the geocache website, attention the degree sign must be replaced by the colon
d) Longitude ("E(W)DD:MM.MMM") as listed on the geocache website, attention the degree sign must be replaced by the colon
e) Signature ("C12..") the code generated with this app
As an example the entry in the QR code generator should look like this:
GC12345,The name of your GC,N47:14.562,E9:35.667,1CEF234784860EDA
Signature = Phonenumber + GC code
QR String = GC code,GC name,Latitude,Longitude,Signature
Apps needed for QR code:
Signature: GC-Codec
QR graphic: QR code generator
How to verify the received SMS:
The SMS sent to the owner has following fields:
GC code,GC name,Username,Signature
The Signature can also be checked with this app, by entering the username in the field "Enter raw text:" and by entering the GC code in the field "Enter key:". The signature generated should match the signature received.
In order to log geocaches with this new system the app GC-Logger is required.

GC-Codec is a free software application from the System Maintenance subcategory, part of the System Utilities category. The app is currently available in English and it was last updated on 2014-05-19. The program can be installed on Android.

GC-Codec (version 1.1) has a file size of 16.78 MB and is available for download from our website. Just click the green Download button above to start. Until now the program was downloaded 1 times. We already checked that the download link to be safe, however for your own protection we recommend that you scan the downloaded software with your antivirus.

Program Details


Publisher mannac
Released Date 2014-05-19
Languages English


Category System Utilities
Subcategory System Maintenance

System requirements

Operating systems android

Download information

File size 16.78 MB
Total downloads 1


License model Free
Price N/A

Version History

Here you can find the changelog of GC-Codec since it was posted on our website on 2016-09-20. The latest version is 1.1 and it was updated on soft112.com on 2017-07-01. See below the changes in each version:

version 1.1

posted on 2014-05-19

Improved help.

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Release Date: 2014-05-19
Publisher: mannac
Operating System: android
Type: Free