Apparently, investigating ears can be helpful when attempting to indentify someone. I didn't read all these, but there are many papers, books, articles, and studies on the topic. Feel free to discuss.
https://www2.le.ac.uk/departments/emfpu/students/bsc/aa-abstract.pdf
http://www.ncbi.nlm.nih.gov/pubmed/12570218
http://onlinelibrary.wiley.com/doi/10.1002/9780470061589.fsa1014/abstract?systemMessage=Wiley+Online+Library+will+be+disrupted+on+21st+March+from+10:30+GMT+(06:30+EDT)+for+up+to+six+hours+for+essential+maintenance.++Apologies+for+the+inconvenience.
Just Google for more.
https://www2.le.ac.uk/departments/emfpu/students/bsc/aa-abstract.pdf
http://www.ncbi.nlm.nih.gov/pubmed/12570218
http://onlinelibrary.wiley.com/doi/10.1002/9780470061589.fsa1014/abstract?systemMessage=Wiley+Online+Library+will+be+disrupted+on+21st+March+from+10:30+GMT+(06:30+EDT)+for+up+to+six+hours+for+essential+maintenance.++Apologies+for+the+inconvenience.
Just Google for more.
