Yes, Medical CareAlert offers systems that do not require a landline for operation. They provide cellular and mobile options that enable users to access help without needing a traditional phone line. This can be particularly beneficial for individuals who primarily use mobile phones or live in areas where landline service is unreliable. The cellular options allow for freedom of movement, as the device functions through cellular networks, offering protection both at home and on the go. It may be advisable to check the specific details of the devices and services offered by Medical CareAlert on their website to find the best fit for individual needs. This can provide clarity on how to effectively use their services without a landline.