public function findUser() {
        $model = ClassRegistry::init($this->usersModel);
        $id = trim($this->in('User ID:'));

        if (!$id) {
            $this->out('<error>Invalid ID, please try again</error>');
            return $this->findUser();
        }

        $result = $model->find('first', array(
            'conditions' => array($model->alias . '.' . $model->primaryKey => $id),
            'recursive' => -1
        ));

        if (!$result) {
            $this->out('<error>User does not exist, please try again</error>');
            return $this->findUser();
        }

        $this->user = $result;

        return $id;
    }