I used a Oceanic VT3 and it's Oceanlog software.
I print the logs and keep them in a binder.
Within the software there is a place for notes on equipment and site details, pictures and divebuddy info. Once a buddy's info is in the log it just take clicking on their name to add them to any log. I just use a best effort to add info. Sometimes that is just a first name but with others I have full name, address, tel#, Certification#.
The software can keep track of dive operators or my instructors the same way.
Signatures are not really needed since logging is for your own needs and even though some higher certs a a dive number requirement they don't have any requirements for log signatures.
I print the logs and keep them in a binder.
Within the software there is a place for notes on equipment and site details, pictures and divebuddy info. Once a buddy's info is in the log it just take clicking on their name to add them to any log. I just use a best effort to add info. Sometimes that is just a first name but with others I have full name, address, tel#, Certification#.
The software can keep track of dive operators or my instructors the same way.
Signatures are not really needed since logging is for your own needs and even though some higher certs a a dive number requirement they don't have any requirements for log signatures.