What characteristic does not typically help in pill identification?

When identifying pills, the imprint code is a key feature because it is unique to each medication and often includes the medication's name, dosage, or identification number. The color of a pill can also aid in identification, as many medications come in specific colors that can be matched to a database or reference guide. The shape of a pill is another important characteristic, as different formulations may have distinct shapes that can help narrow down possibilities.

In contrast, odor is not a reliable characteristic for pill identification. While some medications may have a distinctive scent, many do not, and the presence or absence of odor can vary depending on the pill's condition, storage, and how long it has been since it was manufactured. Therefore, relying on odor could lead to confusion and misidentification. This is why it is not considered a characteristic that typically aids in identifying pills.