Marie worked as a nurse, a demanding profession often requiring long and irregular hours. This meant she frequently returned home late at night, contributing to her concerns about home security. The specific type of nursing she practiced is undocumented, but any nursing role would have imparted observational skills and problem-solving abilities applicable to her later invention.

As a nurse, Marie would have been exposed to medical technology and the importance of careful observation. This likely influenced her approach to designing a security system based on visual monitoring and remote access.

The demanding and unconventional nature of her nursing schedule meant that Marie was often alone at home or arriving at odd hours, leaving her feeling vulnerable. This directly fueled her desire for a more robust home security solution.