Using Modern Technology on Shabbat Where is the Halachic Line

Hello everyone

I have been thinking a lot about how modern technology affects Shabbat observance. With so many devices around us such as phones, smart lights, and even automatic doors I sometimes wonder where the line is drawn

I understand the basic prohibitions but what about situations where technology helps someone for safety health or communication in important situations Are there sources or practical guidance for handling these cases

I would love to hear your perspectives stories or advice on how you balance modern life with Shabbat in a way that feels meaningful and true to the Torah

Thank you