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How to add digital signature in pdf invoice

when we send out important documents to our customers we use signatures to authenticate them for example in the case of online invoices we usually upload the image of a signature or draw our signature on the invoice however these are just images of your signature and not a digital signature on the other hand a digital signature is issued by a certified Authority it's unique to each person and it uses encryption technique to add a layer of security and authenticity to our documents in this video we will see how to authenticate your invoices with a digital signature in the Zoho books windows app click settings in the bottom left corner a new window will open click signature on the left side menu choose yes here to enable digital signature if you want to make digital signature mandatory for all invoices mark this box this means invoices can be sent to customers only if they are digitally signed then you can choose the signature format that is you can configure how your signature appears on the invoice PDF by default your name and the date on which the invoice was signed will be displayed additionally you can also choose to display the email IT organization name and/or distinguished name however if you choose distinguished name then you do not have to choose the email ID and organization name as it includes these already please note the above Tech's preference will reflect on the invoice PDF only if there is no signature image if you have uploaded the signature image on the invoice only the image will appear along with the details of who signed it and when then click Save now let's sign an invoice digitally click invoices click an invoice that you wish to sign then click sign invoice the certificates that you have in your system will be listed if your certificate is not listed disconnect and connect the dongle again and then click refresh choose the certificate with which you wish to sign the invoice and click sign do not close the window as the invoice is getting side now you have successfully signed this invoice you can click on the signature for the certificate details if you have enabled approval workflow in your Zoho books organization then the invoice can be signed after it has been approved and if you have made digital signature mandatory invoices cannot be sent to customers without being signed we saw how to digitally sign a single invoice however when there are hundreds of invoices waiting to be set out signing them one by one isn't practical that's why we have introduced the bulk sign option with this you can sign up to 200 invoices at a time let's see how to digitally sign invoices in bulk click the sign button next to settings in this window the invoices are classified interviews if you have enabled approval workflow then the yet to be signed view will list the invoices...