One of the more frustrating aspects of the Temporary Foreign Worker Program from an application procedure angle can be determining whether ESDC accepts digital signatures, and whether an individual other than the 3rd party representative can sign for the person named as the third party representatives. Helpfully, the Temporary Foreign Worker Program Wiki appears to answer that digital signatures are accepted in the TFWP, and that if there is no doubt that an individual works in the same law firm as an authorized third party then it is reasonable to accept that this individual can sign as an authorized representative. In the Family Class, IRCC has confirmed that applicants should double check the document checklist to determine which forms require original signatures, and for which forms a copy is ok.