GSM enabled BGM.
It's trying to be simple enough for your gramps to use and it almost
gets it. On the first try no less.
If you can actually figure shit out yourself, picking one up is a no-brainer, especially considering the deplorable state of Mac integration from Lifescan. This does an end run around that by being web based with an iOS app.
Glucose Meter || Wireless Blood Glucose Meter || Telcare