A number of companies — including Medtronic that makes implantable devices, Honeywell and Philips that focus on instruments, and other hardware and software companies big and small — are investing in remote-monitoring medical devices, the New York Times reports. The tools can track heart rates and even administer lifesaving interventions such as electric shocks to revitalize a patient. Other issues such as diabetes and mental illness could also be tracked. Some of the possible benefits to patients could include more precise administration of drugs, reducing hospital stays, and fewer doctor visits.