How can an external person create Records in a table w/o access to Airtable?

Hello everyone! 

Right now we have a shared Excel document with an external person. When he has completed a task he will fill a row in the Excel sheet. We want this to be made in Airtable instead. Is that possible? 

I thought about creating a Form, but would it be possible to only use 1 Form for every new Record that needs to be made? Or is there a better alternative?

Thanks in advance!