text: Symbology and identification The gang uses the numeric symbol "737" to indicate association with the gang. The numbers correspond to the letters P, D, and S on a telephone keypad. The initials stand for PENI Death Squad, another name for the group.
  Members often mark themselves with tattoos of different acronyms for the gang. Designs commonly include the words "PENI", "PDS" or the numbers "737", and sometimes in the form of runes, such as "ᛈᛖᚾᛁ" (PENI) or "ᛈᛞᛋ" (PDS), from Germanic runic alphabets.
  Criminal activity
  Public Enemy No. 1 is heavily involved in identity theft, which is not a crime often associated with street gangs; most of the income from this is allegedly used to finance methamphetamine sale and other operations. Originally, the gang did this by raiding mailboxes and trash cans for personal information, but later used contacts inside of banks, mortgage companies and state motor vehicle departments in order to gain access to credit profiles. This has led to law enforcement officials requesting that their personal information be removed so that it can't be used by gang members to identify home addresses of police officers. Additionally, PEN1 is involved in drug trafficking, murder, assault, auto theft, burglary and property crime.