Canaday resident Janson Wu '00 said, "I do usually have to search for one. At B.U. [Boston University] you could stand in a place and always see a blue light."
Both Horn and Wu said they consider the phones a convenience more than a safety measure.
Haynes, who served on the security subcommittee two years ago, said more improvements could be made.
"I should be able to recognize the face of a person approaching me," she said, citing the need for even more lighting.
Sarah E. Flatley, assistant dean of students, said she welcomes student input.
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"The Dean of Students is always concerned about the safety of the students and we're eager to have them talk about their concerns and suggestions."