Identity of the accused person as the culprit is always a required element to be proven for a given offence. As with all essential elements, it must be proven on standard of beyond a reasonable doubt.
It can be proven by way of several methods, none of which are necessarily determinative. Those include:
- first-hand eye-witness who observes the accused as person committing the offence
- exclusive opportunity
- security system photographs/video
- voice identification
- finger prints
- foot prints
All of these methods amount to direct or circumstantial evidence that allow the trier-of-fact to be satisfied that the person who committed the offence was actually the accused person on trial.
Section 6.1 permits any witness to "give evidence as to the identity of an accused whom the witness is able to identify visually or in any other sensory manner."
There is some support for the possibility that identity evidence can be the subject of an order for exclusion of evidence under s. 24(2) of the Charter when a Charter violation is found.
R v Evaglok, 2010 NWTCA 12 (CanLII), per Vertes JA, at para 21 ("...the issue of identification of the person before the court as the person who committed the offence. Unless admissions are made by the defence, this is an element requiring proof in every criminal trial.")
- see s. 6.1 of the Canada Evidence Act, RSC 1985, c C-5
- R v Lewis, 2011 ONCJ 105 (CanLII)
R v Thompson, 2015 NSCA 51 (CanLII) at para 75
Thompson at para 75
R v Hoben, 2009 NSCA 27 (CanLII) at para 18 to 20
Other Methods of Proving Identity
Proving Identity of Online Communications
It rare that a person will identify themselves by their own name. Accordingly, identity of a person communicating online must be done by inference in most cases.
A sender of an email can be identified using evidence of accessibility to the sender's computer and accessibility to sender's account, including whether the accused's login information was used to send it. This holds true for communication by social media as well.
In certain cases, it is possible to identify the person behind a particular user account by considering the information provided in the account as well as the content of the communications.
The presence of a wireless, by itself, cannot lead to the inference that another person may be responsible for the internet communication.
Identity of Sender of Cell Phone Text Messages
Proving identity of the sender and receiver of text messages is part of the authentication process to admit them.
e.g. R v Kwok  O.J. No 2414 (*no link) at para 7 -- "[the officer's] evidence indicated that 99% of users do not use their real names."
e.g. R v Mirsayah, 2007 BCSC 1596 (CanLII) at para 79, 80
e.g. R v Weavers, 2009 ONCJ 437 (CanLII) at para 86
R v Harris, 2010 PESC 32 (CanLII) -- determined ID for a facebook account based on content of conversations
R v Brzezinski, 2009 CanLII 78360 (ON SC) at para 46 - warrant upheld on basis that inference of a third party downloading child pornography not reasonable
- See more at Electronic Documents#Authentication
Fingerprint evidence should be accompanied by some form of evidence supporting a "temporal connection" it make out a circumstantial case.
R v Yonkman, 2005 BCCA 561 (CanLII), 202 CCC (3d) 289 at para 9 to 11
When determining if the voice on a wiretap matches that of the accused, the judge may consider the accused's voice during testimony and compare it with the voice recorded.
While a non-expert may give testimony on identifying a voice, there are several factors that determine the weight that should be given:
- Is there direct or circumstantial evidence that the speaker is in fact the appellant?
- Are the events following the conversations in which the appellant was identified consistent with the speaker being the appellant? For instance, in the case on appeal, a meeting was arranged but the appellant never carried through with it.
- Is there some peculiarity or distinctiveness to the appellant's voice that would make it more readily identifiable? Are there "internal patterns" or patterns of speech, distinctly associated with the appellant?
- Did the speaker disclose facts known by the appellant or, more compellingly, known only to the appellant?
- Are the "context and timing" of the conversation consistent with the theory that the speaker is the appellant? Or, on the other side of the coin, was the identity of the speaker tainted by the witness's expectation that he would be the appellant?
- Are there distinctive or distinguishing features of the voice?
- Did the party to the communication identify him or herself?
- Did the party to the communication provide information that would allow the listener to identify him or her?
- Was there evidence of physical surveillance at the same time as the private communication to allow the speaker to be identified?
- Did the witness hear the voices under the same conditions, or was the emotional state different in each situation?
- What is the length of time during which the witness was able to hear the voice?
- Was there any reason for the witness to focus on the voices?
- What was the condition of the witness when he or she heard the voices, alert or groggy?
- What was the length of time between the times the witness heard the voices?
- Were there any contradictions in the description given by the witness - did the witness testify that the accused spoke with an accent when he or she did not?
- Did anything compromise the identification process - was the witness assisted in identifying the voice, or was the witness' opinion tainted by the expectation that the voice was that of the accused?
- Is the witness' opinion contradicted?
The judge is entitled to use his own senses to evaluate the recorded voices to determine identity.
It is not necessary to prove that the voice is that of the accused beyond a reasonable doubt as an essential element.
Similar to eye-witness identification, voice identification suffers from the frailty that the witness may misidentify the accused and should be treated with extreme caution. 
A jury should be cautioned about the frailties of voice identification particularly in matching voices. Concerns include:
- risk of relying on their own untrained ears, or those of a witness, none of whom had the benefit of equipment or training that would be available to an acoustic phonetician;
- the fact that witness confidence in voice identification does not make the identification reliable;
- the importance of considering the length and quality of the voice samples;
- the availability of high quality non-distorting playback systems; and,
- if applicable, the difficulties inherent in cross-racial voice identification
- R v Gyles, 2005 CanLII 47588 (ON CA)
R v Williams, 1995 CanLII 695 (ON CA)
R v Chan, 2001 BCSC 1180 (CanLII) at para 31
R v Parsons,  Y.J. No. 3 (Terr. Ct.)(*no link)
R v Saddleback, 2013 ABCA 250 at para 25
R v Pinch, 2011 ONSC 5484 (CanLII), per Hill J
- R v Wu, 2010 ABCA 337 (CanLII)
- R v Chan, at para 26 (the Crown "need not prove voice identification beyond a reasonable doubt. The evidence of voice identification is simply an individual item of evidence going to the identity of the accused and, accordingly, the standard of proof is by a preponderance of evidence")
Chan, ibid. at para 22
R v Clouthier, 2012 ONCA 636, at para 19
- R v Pinch, 2011 ONSC 5484 (CanLII) R v Masters, 2014 ONCA 556 (CanLII) - suggested not necessary, but preferred
Proof of Age
Any testimony by a person as to their own date of birth is sufficient evidence to prove their age.Likewise, any testimony of a parent as to the age of their child will be admissible to establish that child.
Otherwise, age can be proven by any number of means such as birth certificate, baptismal certificate, or material hospital record.
- see s. 658(1)
- see s. 658(2)
- see s. 658(3)
- s. 658(4)
- s. 658(5)