Yes, it is true that you won't hear w/o your CI processor in most instances. However, they have advanced to where it's possible to save some residual hearing in some cases. I don't know the statistics. When I take off my processor and hearing aid I hear virtually nothing, so yes, this is an issue,, especially if you live alone. Service dogs are wonderful, but there is a lot of technology that can alert you. Some use vibrating devices under the pillow or mattress, or provided by a wrist watch. Some use strobe lights to alert them. These technologies are available as alarm clocks or alerting systems for fire alarms, door bells, baby cry, telephones, etc. Check out Diglo.com for a variety of devices available.