Probably is easier as severity of the accident increases.  Fender benders are not likely something an officer would go to the effort to apply for a warrant, and it is questionable if a judge would even sign it in that case.  When you get into serious damage and injury accidents I think it becomes more likely warrants/searches could occur. Many departments are obtaining technology to pull data from phones and computers. Passwords can still be a sticky point in some cases, I think.  This stuff is all new since I retired.