The "Silent Ping" enables you to sent a message to another cellphone without the owner getting knowledge about.

The message is discarded on the owners phone and no trace exists. You will get back a message from the operator that your message has been delivered, proving that your message has been received, and thus you can know that the owners phone is switched on.

This is not some kind of hack or whatever. It's a normal function per standard and works on any phone.

Q: Why such a software?
A: I regulary need it in my job. Sometimes I have to be sure a specific phone is switched on and I can send information to that phone without it beeing stored (class zero message).

Usage.
Copy the CAB file to your device and double click it.
The program is installed to \Program Files\HushSMS\HushSMS.exe.

There are three functions:
- Send a normal SMS.
- Send a class zero message (Flash-SMS).
- Send a stealthy message.

To send a normal sms, leave the checkboxes for "Class 0" and PING unchecked. If you want a receipt enable the "Return Confirmation" checkbox.
To send a class zero message enable the "Class 0" checkbox and write your message.
To send a silent PING just enable the "PING" checkbox. There is no need to write something in the Textbox, because the target phone will discard it anyway.

If you enter the number manually you have to enter it in international format (for example starting with +49... for Germany). You can alternately choose the number from your address-book but it has to be in international format also. The program will pop-up a message box to notify you about the success or failure of the sending process. This message box might be under an overlaying window if you have other programs open (a file explorer for example).

A word of warning:
If you send a class zero message to a windows mobile device, your number will not be shown. Instead of the senders number, windows mobile will show something like "Network Message". So in general this tool could be used in a manner it is not intended and designed for. So be responsible!

Update Description:
v0.3 Beta (08-04-2008):
It's beta, so I ask you to test it on smartphone and Square devices and tell if it is working fine or if there are GUI problems left (there may be some functional problems, but hey, it's beta and time is limited these days ;-).
This version is only tested in emulator (at least for smartphone and square device)..
It has a new feature for sending MWI (Message Waiting Indicator) messages. This was some fun in the late 90'th. But don't get people pissed by sending them these messages. I implemented it as a feature, not some kind of hack!
If your provider allows this kind of message, it will do the following:
The recipient device displays a pop-up, showing a new voice message on the voice-box. In second on most device NO sender number is shown (I only saw blackberrys that showed the number of the sender).
In addition a record symbol is displayed it the recipients title bar, and this cannot be deleted. Only a deactivation message can delete the symbol.
So whatever you do with it: Be responsible and don't make stupid shit with other peoples phones.

There is a second edit-box in the main window (for PPC users) wich is currently used for RIL debugging. It will be off in the final version.
Yes, you're read right. For some messages I use RIL directly as the sms api from M$ is piece of crap.
One can do alot of stuff by using RIL directly for messaging ;-)

v0.2 (06-03-2008):
- Number can now be entered in national or international format.
- Changed Icon.

v0.1 (23-10-2007):
- Initial program version.

*** [Apr 17, 2008] by aft3rgl0w using qtek 8310
I've tried 0.3 version but there seem to be gui problems. It just doesn’t show up properly plus the checkboxes ping and class 0 are missing and I don’t know what else. I've attached a screenshot of it for u to check out here. http://img136.imageshack.us/my.php?image=hushsms03sy1.jpg

I was using 0.1 version so far. Have to say the ping didn’t work. I was sending the ping sms to a friends mobile which was switched off and I was still getting a reply back that it was delivered... that’s not right... right? He has a phone that’s not based on any wm5 or 6 I think its just some java sony erricson. He's also not on the same network as I am. Class 0 sms seem to work, message was not stored on my mate’s phone, it was just displayed (my number was visible too) and then it was discarded. Handy indeed.

Apparently u don’t have hushsms 0.1 nor 0.2 and 0.3 from smartphones or your site. I just downloaded 0.3 from here. Can u please upload all the versions of hushsms for smartphone? I wanna try 0.2 and check if it runs smoothly.

I nearly forgot, my phone is qtek 8310 with cooked wm6 ROM English 5.2.1711.18165.0.5.0 by Nitrogenious. Hoping to see the ping thingy finally work properly or tell us on which situations it is only meant to be working. Ciao.

* [Apr 10, 2008] by ppc using Htc Kaiser
Very disappointed. Does not even display properly and poor instructions.

* [Mar 8, 2008] by GeLopez using vx6800 verizon
Did NOT work as promised. Msg/ping were sent good including MY NUMBER. So there is nothing stealth about it. Using verizon vx6800.

** [Feb 12, 2008] by Tim using ATT Tilt, ATT 8900, HTC Kaiser
I was excited to try this software out, but alas it does nothing that it says it does. Sending messages to a razor that was in network, all messages, Zero class, and ping, were received by the razor with my number showing. The return confirmation does not work either. I tried this program with sending messages of all kinds to a WM6 Verizon phone and still the same, my number would show, and the ping, with no message would not show, but I would never get a response for myself. When I did this with my brothers verizon voyager, he would not even get a marked normal sms from this program, no response at all. I had high hopes...good thing it was free and easy to take off. Because sometimes people do not get the text's I will not even keep it if I go over my texts and need to send them via a different route.

**** [Oct 26, 2007] by Dave using O2 Mini S
Working very well, like the fact that it has a receipt option, which (I think) none of the other softwares of this type have. Only thing is after you press 'send' the software exits itself! Don't know if this is a bug.

*** [Oct 26, 2007] by Jon using HTC P4300
Silent Ping only seems to work within your own network. I pinged someone out of the network and it was received by the other person. Also the network message only seems to show in the same network as well. When sent to my friend out of my network using the class 0, (and he has WM6) it shows my number. Maybe it's simply because he has WM6 and I'm using WM5. I don't know.