Yes!
The Shtar Chatzi Zachor works by recording a symbolic debt to an heir that activates before death. This debt is waived if the heir follows the secular will. The debt is set higher than the estate’s value, ensuring heirs honor the secular will.
Your local Orthodox Rabbi will be able to answer any further questions you have about a Halachic Will. Your Rabbi will also be able to take you through the process of creating your own Halachic Will.