Do I need a visitor sign-in sheet at all?
Keeping one lets staff know who is on site at any time. Whether your site must keep one depends on local rules, your lease, and your insurance terms, so check those with your building manager or security lead before you decide.
Can I use a visitor log template instead of an online form?
Yes, if people can use it and someone can read the results. The fields that matter are the visitor's name and organization, the host, the date, the arrival time, the purpose, and the escort answer. A paper log also needs a place to store it and a rule for who can read it.
Is there a free visitor sign-in sheet to print?
This page gives you the field list, not a printable file. Attain OS makes online forms that people fill in from a shared link, so there is no printed sheet to keep at the desk. The pricing page lists the current plans.
Can guests sign in on their own phones?
Yes, if the form link is somewhere guests can open it, such as a tablet at reception or the confirmation message the host sends. Keep a staff member near the desk for guests who arrive without the link or need help.