You can protect your formulas by providing an encryption key. Tecstock.com takes your hard work very seriously and uses an 256-bit encryption algorithm to protect your formulas. This makes sure that no one can use your formulas without your key.

If you sell your formulas in an encrypted format, the formulas will always remain encrypted, meaning that the buyers can only use your formulas. They will not be able to read, edit and resell your formulas. The buyers will be able to read the formula description though. So make sure you always provide detailed description on how to use the formulas.

Want to resell the same set of formulas periodically? You can do it! You can use the date function to restrict the use of your formulas to a predefined time frame.

For example, the following simple formula is to generate doji signals. doji is a candlestick pattern where open = close. However, the formula works only when it is before 2010-12-01. This is because the variable valid will always be 0 (meaning no more valid) after 2010-12-01. More details on this and additional examples can be found in the formula guide.

valid := if(date < 1101201, 1, 0); # valid becomes 0 after 2010-12-01
doji  := close = open;
signal_doji : doji and valid;

You can also use formula export to archive your formulas and keep a copy of your valuable work on your local machine.

When exporting formulas, please note that

• you can only export formulas in your account that are not encrypted;

• if your export formula F2 which calls another formula F1 in your account, make sure that you also export F1. Otherwise people will not be able import your formulas;

• the size of the export result is limited to 50K bytes. This should be sufficient in most cases. If you have more formulas to export, try to export them to multiple files with smaller size.