Hi Kelly
I don't have a system in place that allows clients to provide me with 'real' signatures to confirm the work was carried out. Most time the client will just send an email to confirm.
I'm sure others will pitch in here. I'd be curious to see the other responses.

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Carlana Charles - Ciboney Virtual Solutions
Web: http://ciboneyvirtual.com Blog:http://ciboneyvirtual.com/blog