We use a landing page at tradeshows to keep notes and submit records to Marketo and of course we use the RingLead webhook to update existing records in Salesforce. We can even create new Contacts in existing Accounts and not just new Leads.
The RL UI allows field by field selection of field actions based on the field type. Overwrite, update if blank, do not update, append, prepend, merge (for picklists), raise, lower and increment.
We take notes at the booth, make selections from dropdowns, add to a campagin, and prevent duplicates, right there from our iPads.
Of course we scan badges, but that process is a nightmare. It is too slow and impossible with the one scanner and six people at the booth to memorialize the conversation.
We import that list later into Marketo and update the records at the booth with the landing page, again via Marketo and the RingLead webhook.
With RingLead, the emails do not need to be exact match.
If you are coming to Summit and want to see how it works, stop by the RingLead booth #226.