Software by tag 'secret'

Create notes that will self destruct after read

Posted by Lim on Jul 7th, 08 | Filed under Cool Stuff, Internet | 4 Comments

Privnote is an interesting web service that will create a note which will self destruct after being read.

We can send someone a note through many ways, such as email and sms. But none of these are safe. People may hack the mail account and look for sensitive data, and handphone is easy to lost due to its “small” size. So, what is the best way to send note to somebody?

Perhaps the receiver will delete the mail/sms after read. But, what will happen if they forgot to do so? So, why not send them a self destructive note?

I believe there are a lot of telco which offer self destructive sms, which will automatic delete the sms from handphone after being read (but with higher charge). Now, you can send self destructive notes through Privnote also.

Simply type your notes and press the “Post it” button. The system will generate a short link to the note. After the receive read it, system will delete the note from database, so that no one can retrieve it.

The sender can turn on the notify feature so that he/she will be informed when the receive open the note. You can click the link yourself if you found that you had send the wrong message, but make sure you click it before the receiver click.

Privnote

Create a totally hidden folder on your desktop

Posted by Lim on Mar 26th, 08 | Filed under Cool Stuff, Tips, Tutorial | 5 Comments

This tutorial will discuss how to create a “hidden” folder with a blank name and no icon, so that nobody will know the existence of that folder.

There are a lot of methods to make your folder invisible. The easiest way is to set the property “hidden” to true. Else, you can get some softwares to do it for you. Now, i would like to discuss another method.

Step 1

Right click on anywhere and choose New -> Folder.

Step 2

Rename the folder. When you rename, delete the original name, hold your “alt” key and press “0160“. This will create a blank name for your folder.

Step 3

After that, right click on your folder and choose Properties. Choose Customize and then press Change Icon button. Select a blank icon from the list. Now, you had successfully create a hidden folder.

People will not know the existence of the folder, even they set to view invisible folder. This is because your folder has no icon and no name!

invisible folder

My advise

Try to put the hidden folder at the middle of your desktop, so that no one will accidentally select them. To make your folder more secure, you can check the “hidden” property.

How to hide important information in an image file?

Posted by Lim on Feb 6th, 08 | Filed under Tips, Tutorial | 5 Comments

This tutorial will discuss about how to hide a text file in a jpeg/bitmap image file. It can be done without any other application.

Sometimes, we save our email-account and password inside a text file, but we scare other people get the file and then access our email. So, we always thinking method to protect our own password. We may use some password manager to save all the password with a master password. But, what happen is we lost the master password or other people manage to hack the master password? So, why not we hide the important information inside an image file?

How it work?

  1. First of all, you need to save your informations in a text file and then prepare an image (either jpeg or bitmap format). In this example, i will user secret.txt as my text file and photo.jpg as my image file.
  2. Put the text document and image together. Here, i put them in my C: drive.
  3. Go to Run, the type cmd. This will bring you to the command prompt.
  4. Now, type cd\ to go to the root. In this case, the root is C:. You can proceed to the next step if you save your image and text file in C: drive. But, if you save them in other folder, such as c:\testing, you need to type cd\testing to go into the folder.
  5. Now, you reach the most important part. Type copy photo.jpg/B+secret.txt/B output.jpg. The image file need to come first. If you put your text file before image file, the output image file maybe cannot open properly. Beside this, the input image and output image must be same format (either both in jpeg or both in bitmap).
  6. Now, try to open the output.jpg using any image viewer. Looks no different with photo.jpg right?
  7. Now, try to open output.jpg using notepad, you will found the secret.txt contents inside.

Now, your informations are safe enough, because you are the only person which know which image contains the informations. Even they can access the file, they won’t open an image with notepad, right?

Advice: It is better to choose smaller size image, else you need longer time to open it using notepad.