Utility to block unwanted keys

A small/lightweight executable or DLL to only allow user to use ordinary keys on any keyboards.

The software while running should only allow user to press the following keys:

- Alpha numerics: A-Z, a-z, 0-9, spacebar

- Symbols: ` ~ ! @ # $ % ^ & * ( ) - _ + = { } [ ] | \ : ; ' " < > , . ? /

- Arrow keys: up, down, left, right

- Control/function keys: Shift, F5, Esc, Tab, CapsLock, Home, End, Delete, Backspace, Page Up, Page Down, Enter

Any other keys not listed above must not take any effect whatsoever.

The software must work on basic and professional versions of Windows 7, 8 and 10.

Compilable source code must be provided upon completion.

Please note that no UI is required.

- The software must be portable (no installation required).
- If it is an executable, only a single file is required for it to run. If it is a DLL, there must be only one DLL required.
- The executable or DLL only takes effect after being executed within a Windows session.
- The executable or DLL must restore the system back to normal upon exit.
- The executable or DLL must have a secure way to terminate. Only the person invokes it can terminate it by using a passphrase via command line parameter or function call parameter (if DLL). The software must not exit unless being terminated with correct passphrase; or system shutdown.

- The executable (if not DLL) must run in the background.
- While running, it must perform the system-wide blocking.
- The executable or DLL must work on both Windows 64bit and 32bit.

Guys, I need to elaborate due to the overwhelming number of bids. Any key not listed above must not take effect whatsoever (either pressed by itself or in a combination). For instance, Ctrl+Alt+Delete must not work as Alt is not allowed, Win+L must not work as Windows key is not allowed. If you can do that, please message me as I am very keen to go ahead. Feel free to update your bid amount if you see fit. Please contact me only if you can do it.

Taidot: Assembly, C-ohjelmointi, C# -ohjelmointi, C++ -ohjelmointi, Windows Desktop

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Tietoa työnantajasta:
( 0 arvostelua ) Australia

Projektin tunnus: #8664485

33 freelanceria on tarjonnut keskimäärin %project_bid_stats_avg_sub_26% %project_currencyDetails_sign_sub_27% tähän työhön


hello, Thanks for the update :) That was clear and my bid is still valid. I'd be happy to help you on this - delivering a dll and a sample application that demonstrates using it. Thanks to your concise description Lisää

$1316 AUD 10 päivässä
(62 arvostelua)

A proposal has not yet been provided

$1159 AUD 20 päivässä
(204 arvostelua)

Hi I would be happy to help with your project :) I have over 10 years of experience with C# and C++, I specialize in Windows applications and GUI design. I also have lots of experience working with system-wide hotkeys Lisää

$750 AUD 10 päivässä
(78 arvostelua)

Hi, I am expert developer with large experience in various areas including keyboard interception. I can build a standalone tool that would do the blocking transparently. Note that Ctrl + Alt + Del key combination could Lisää

$804 AUD 20 päivässä
(22 arvostelua)

Hello, I'd like to work on your project and help you accomplish what you need, using my substantial extensive experiences with C/C++, C# and Keyboard hooks as well as many many more. Please, feel free to review my Lisää

$1388 AUD 10 päivässä
(65 arvostelua)

Hi, I would like to work on your project. I'm expert in making key-blocking tools for windows OS. Please take a look at my profile and message me. Thank You! .. Lisää

$750 AUD 2 päivässä
(53 arvostelua)

Hi, I am able to write such low level key hooker that can block unwanted keys. It can be in C (with asm instructions inside) or in C#. Kind Reagrds, Narek.

$1155 AUD 20 päivässä
(108 arvostelua)

Hello, I have created a demo app for you please check it, after accepting me I can complete very well your requests. in demo app: -There are three key for test purpose -Block works on system wide. -You can en Lisää

$750 AUD 5 päivässä
(22 arvostelua)

Good day to you! I am a proficient C/C++ developer who is familiar with WinAPI. I think I can help you with your project, providing you a small executable (~40-80 KB size, not more) or DLL (I think DLL would be better Lisää

$750 AUD 20 päivässä
(43 arvostelua)

Hi.. Please contact me, then we can discuss about the details and the price. I am an expert in this part. Thanks.

$1159 AUD 20 päivässä
(19 arvostelua)

I have around 10 years experience in the field of Software Development with expertise in Win32, MFC, C++ & C#. I have worked on similar projects in the past to monitor global system events, keyboard and mouse input. Lisää

$1250 AUD 15 päivässä
(8 arvostelua)

Hello, how are you? I have an experience in Windows API hooking. I made an app which is similar to your app. More details after contact. Best regards, Jin It was a Arabic edit app. As you know, people must write Lisää

$1500 AUD 15 päivässä
(2 arvostelua)

Hello, my solution will be based on: - Interception . A programming interface for intercepting input device communication. I'm contributing in this project, and i can tell you that there is no better way to intercept Lisää

$965 AUD 14 päivässä
(9 arvostelua)

I think I can do the job. Anyway the following should be noticed: To monitor the keyboard events for all desktop processes you need to define the "hook" procedure as a DLL. Moreover to make it work for both 32 bit and Lisää

$1250 AUD 15 päivässä
(2 arvostelua)

Hi, I am an expert Windows C/C++ programmer, I have more than 10 years of Windows solid programming. Your project can be implemented, I can create for you a single exe app that blocks the all unwanted keys, it wi Lisää

$1250 AUD 5 päivässä
(3 arvostelua)

Dear Employer, Basing on my experience I am afraid some of your requirements are not feasible. System-wide blocking of keyboard events requires installation of keyboard class filter driver. Your requirement to have Lisää

$1250 AUD 20 päivässä
(3 arvostelua)

I have worked on blocking unwanted keys. i will upgrade the utility for you for easy to use. I add a special option 'case sensitive' means you can allow only A or a that option not available to all. I have develo Lisää

$1000 AUD 5 päivässä
(1 arvostelu)

Hi, I have read your post and understood your requirement. I have great experience in handling /C Programming/C# Programming/C++ Programming/PHP/MySQL/HTML5/jQuery/Wordpress/Magento/Joomla/Drupal/AngularJS/node.j Lisää

$1546 AUD 14 päivässä
(2 arvostelua)

A proposal has not yet been provided

$833 AUD 3 päivässä
(2 arvostelua)

1. I would not suggest for a DLL after reading the additional requirement. 2. I would want to go for a executable so a double click is enough to start it and the exit will require a code, I am thinking for a set of st Lisää

$750 AUD 5 päivässä
(1 arvostelu)